| Member | Party | Years | District | Electoral history |
|---|
| Pete Abele | Republican | January 3, 1963 – January 3, 1965 | 10th | Lost re-election |
| Walter H. Albaugh | Republican | November 8, 1938 – January 3, 1939 | 4th | Elected to finishFrank L. Kloeb's term
Retired |
| Charles J. Albright | Opposition | March 4, 1855 – March 3, 1857 | 17th | Lost re-election |
| Arthur W. Aleshire | Democratic | January 3, 1937 – January 3, 1939 | 7th | [data missing] |
| James Alexander Jr. | Whig | March 4, 1837 – March 4, 1839 | 11th | [data missing] |
| John Alexander | Democratic-Republican | March 4, 1813 – March 4, 1817 | 2nd | [data missing] |
| Alfred G. Allen | Democratic | March 4, 1911 – March 4, 1917 | 2nd | [data missing] |
| John W. Allen | Whig | March 4, 1837 – March 4, 1841 | 15th | [data missing] |
| William Allen | Democratic | March 4, 1859 – March 4, 1863 | 4th | [data missing] |
| William Allen | Jacksonian | March 4, 1833 – March 4, 1835 | 7th | [data missing] |
| Jacob A. Ambler | Republican | March 4, 1869 – March 4, 1873 | 17th | [data missing] |
| Carl C. Anderson | Democratic | March 4, 1909 – October 1, 1912 | 13th | Died |
| Charles Marley Anderson | Democratic | March 4, 1885 – March 4, 1887 | 4th | [data missing] |
| Sherlock J. Andrews | Whig | March 4, 1841 – March 4, 1843 | 15th | [data missing] |
| Timothy T. Ansberry | Democratic | March 4, 1907 – January 9, 1915 | 5th | Resigned when appointed to theOhio Court of Appeals |
| Douglas Applegate | Democratic | January 3, 1977 – January 3, 1995 | 18th | [data missing] |
| Jean Spencer Ashbrook | Republican | June 29, 1982 – January 3, 1983 | 17th | [data missing] |
| John M. Ashbrook | Republican | January 3, 1961 – April 24, 1982 | 17th | Died |
| William A. Ashbrook | Democratic | March 4, 1907 – March 4, 1921 | 17th | [data missing] |
| January 3, 1935 – January 1, 1940 | Died |
| James Mitchell Ashley | Republican | March 4, 1859 – March 4, 1863 | 5th | [data missing] |
| March 4, 1863 – March 4, 1869 | 10th | [data missing] |
| Thomas W. L. Ashley | Democratic | January 3, 1955 – January 3, 1981 | 9th | [data missing] |
| Gibson Atherton | Democratic | March 4, 1879 – March 4, 1881 | 14th | [data missing] |
| March 4, 1881 – March 4, 1883 | 13th | [data missing] |
| Steve Austria | Republican | January 3, 2009 – January 3, 2013 | 7th | [data missing] |
| William H. Ayres | Republican | January 3, 1951 – January 3, 1971 | 14th | [data missing] |
| John J. Babka | Democratic | March 4, 1919 – March 4, 1921 | 21st | [data missing] |
| De Witt Clinton Badger | Democratic | March 4, 1903 – March 4, 1905 | 12th | [data missing] |
| Joe E. Baird | Republican | March 4, 1929 – March 4, 1931 | 13th | [data missing] |
| Troy Balderson | Republican | September 5, 2018 – present | 12th | Incumbent |
| Edward Ball | Whig | March 4, 1853 – March 4, 1855 | 16th | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| Henry B. Banning | Liberal Republican | March 4, 1873 – March 4, 1875 | 2nd | [data missing] |
| Democratic | March 4, 1875 – March 4, 1879 | [data missing] |
| Henry T. Bannon | Republican | March 4, 1905 – March 4, 1909 | 10th | [data missing] |
| Levi Barber | Democratic-Republican | March 4, 1817 – March 4, 1819 | 3rd | [data missing] |
| March 4, 1821 – March 4, 1823 | [data missing] |
| Nelson Barrere | Whig | March 4, 1851 – March 4, 1853 | 7th | [data missing] |
| Mordecai Bartley | Democratic-Republican | March 4, 1823 – March 4, 1825 | 14th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 | [data missing] |
| Anti-Jacksonian | March 4, 1829 – March 4, 1831 | [data missing] |
| Ellsworth Raymond Bathrick | Democratic | March 4, 1911 – March 4, 1915 | 19th | [data missing] |
| March 4, 1917 – December 23, 1917 | 14th | Died |
| A. David Baumhart Jr. | Republican | January 3, 1941 – September 2, 1942 | 13th | Resigned after receiving a commission in theUnited States Navy |
| January 3, 1955 – January 3, 1961 | [data missing] |
| Clifton Bailey Beach | Republican | March 4, 1895 – March 4, 1899 | 20th | [data missing] |
| Reasin Beall | Democratic-Republican | April 20, 1813 – June 7, 1814 | 6th | Resigned |
| John Beatty | Republican | February 5, 1868 – March 4, 1873 | 8th | [data missing] |
| Joyce Beatty | Democratic | January 3, 2013 – present | 3rd | Incumbent |
| Philemon Beecher | Democratic-Republican | March 4, 1817 – March 4, 1821 | 5th | [data missing] |
| March 4, 1823 – March 4, 1825 | 9th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 | [data missing] |
| James T. Begg | Republican | March 4, 1919 – March 4, 1929 | 13th | [data missing] |
| Jacob A. Beidler | Republican | March 4, 1901 – March 4, 1907 | 20th | [data missing] |
| Hiram Bell | Whig | March 4, 1851 – March 4, 1853 | 3rd | [data missing] |
| James Martin Bell | Anti-Jacksonian | March 4, 1833 – March 4, 1835 | 11th | [data missing] |
| John Bell | Whig | January 7, 1851 – March 4, 1851 | 6th | [data missing] |
| George H. Bender | Republican | January 3, 1939 – January 3, 1949 | At-large | [data missing] |
| January 3, 1951 – January 3, 1953 | Resigned after being elected to theUS Senate |
| January 3, 1953 – December 15, 1954 | 23rd |
| John Berry | Democratic | March 4, 1873 – March 4, 1875 | 14th | [data missing] |
| Jackson E. Betts | Republican | January 3, 1951 – January 3, 1973 | 8th | [data missing] |
| Herbert S. Bigelow | Democratic | January 3, 1937 – January 3, 1939 | 2nd | [data missing] |
| John A. Bingham | Opposition | March 4, 1855 – March 4, 1857 | 21st | [data missing] |
| Republican | March 4, 1857 – March 4, 1863 | [data missing] |
| March 4, 1865 – March 4, 1873 | 16th | [data missing] |
| Harrison Gray Otis Blake | Republican | October 11, 1859 – March 4, 1863 | 14th | [data missing] |
| Philemon Bliss | Opposition | March 4, 1855 – March 4, 1857 | 14th | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| George Bliss | Democratic | March 4, 1853 – March 4, 1855 | 18th | [data missing] |
| March 4, 1863 – March 4, 1865 | 14th | [data missing] |
| John Boccieri | Democratic | January 3, 2009 – January 3, 2011 | 16th | [data missing] |
| John Boehner | Republican | January 3, 1991 – October 31, 2015 | 8th | Speaker of the House 2011-2015 |
| Frances P. Bolton | Republican | February 27, 1940 – January 3, 1969 | 22nd | [data missing] |
| Chester C. Bolton | Republican | March 4, 1929 – January 3, 1937 | 22nd | [data missing] |
| January 3, 1939 – October 29, 1939 | Died |
| Oliver P. Bolton | Republican | January 3, 1953 – January 3, 1957 | 11th | [data missing] |
| January 3, 1963 – January 3, 1965 | [data missing] |
| William K. Bond | Anti-Jacksonian | March 4, 1835 – March 4, 1837 | 7th | [data missing] |
| Whig | March 4, 1837 – March 4, 1841 | [data missing] |
| Melvin M. Boothman | Republican | March 4, 1887 – March 4, 1891 | 6th | [data missing] |
| Frank T. Bow | Republican | January 3, 1951 – November 13, 1972 | 16th | Died |
| Stanley Eyre Bowdle | Democratic | March 4, 1913 – March 4, 1915 | 1st | [data missing] |
| Charles Brand | Republican | March 4, 1923 – March 4, 1933 | 7th | [data missing] |
| Edward G. Breen | Democratic | January 3, 1949 – October 1, 1951 | 3rd | Resigned |
| Walter E. Brehm | Republican | January 3, 1943 – January 3, 1953 | 11th | [data missing] |
| John Lewis Brenner | Democratic | March 4, 1897 – March 4, 1901 | 3rd | [data missing] |
| Henry R. Brinkerhoff | Democratic | March 4, 1843 – April 30, 1844 | 21st | Died |
| Jacob Brinkerhoff | Democratic | March 4, 1843 – March 4, 1847 | 11th | [data missing] |
| Jacob H. Bromwell | Republican | December 3, 1894 – March 4, 1903 | 2nd | [data missing] |
| Bud Brown | Republican | November 2, 1965 – January 3, 1983 | 7th | [data missing] |
| Charles E. Brown | Republican | March 4, 1885 – March 4, 1889 | 2nd | [data missing] |
| Clarence J. Brown | Republican | January 3, 1939 – August 23, 1965 | 7th | Died |
| Seth W. Brown | Republican | March 4, 1897 – March 4, 1901 | 6th | [data missing] |
| Sherrod Brown | Democratic | January 3, 1993 – January 3, 2007 | 13th | [data missing] |
| Shontel Brown | Democratic | November 2, 2021 – present | 11th | Incumbent, elected to finishMarcia Fudge's term |
| Clement L. Brumbaugh | Democratic | March 4, 1913 – March 4, 1921 | 12th | [data missing] |
| Henry Brush | Democratic-Republican | March 4, 1819 – March 4, 1821 | 3rd | [data missing] |
| Ralph P. Buckland | Republican | March 4, 1865 – March 4, 1869 | 9th | [data missing] |
| Robert J. Bulkley | Democratic | March 4, 1911 – March 4, 1915 | 21st | [data missing] |
| Hezekiah S. Bundy | Republican | March 4, 1865 – March 4, 1867 | 11th | [data missing] |
| March 4, 1873 – March 4, 1875 | [data missing] |
| December 4, 1893 – March 4, 1895 | 10th | [data missing] |
| Raymond H. Burke | Republican | January 3, 1947 – January 3, 1949 | 3rd | [data missing] |
| Thomas H. Burke | Democratic | January 3, 1949 – January 3, 1951 | 9th | [data missing] |
| Joseph Burns | Democratic | March 4, 1857 – March 4, 1859 | 15th | [data missing] |
| Theodore E. Burton | Republican | March 4, 1889 – March 4, 1891 | 21st | [data missing] |
| March 4, 1895 – March 3, 1909 | Resigned after being elected to theU.S. Senate |
| March 4, 1921 – December 15, 1928 | 22nd | Resigned after being elected to theU.S. Senate |
| George H. Busby | Democratic | March 4, 1851 – March 4, 1853 | 11th | [data missing] |
| Benjamin Butterworth | Republican | March 4, 1879 – March 4, 1883 | 1st | [data missing] |
| March 4, 1881 – March 4, 1883 | 11th | [data missing] |
| March 4, 1885 – March 4, 1891 | 1st | [data missing] |
| Joseph Cable | Democratic | March 4, 1849 – March 4, 1853 | 17th | [data missing] |
| John L. Cable | Republican | March 4, 1921 – March 4, 1925 | 4th | [data missing] |
| March 4, 1929 – March 4, 1933 | [data missing] |
| James Caldwell | Democratic-Republican | March 4, 1813 – March 4, 1817 | 4th | [data missing] |
| John A. Caldwell | Republican | March 4, 1889 – May 4, 1894 | 2nd | Resigned after being electedMayor of Cincinnati |
| James E. Campbell | Democratic | June 20, 1884 – March 4, 1885 | 7th | [data missing] |
| March 4, 1885 – March 4, 1887 | 3rd | [data missing] |
| March 4, 1887 – March 4, 1889 | 7th | [data missing] |
| John Wilson Campbell | Democratic-Republican | March 4, 1817 – March 4, 1823 | 2nd | [data missing] |
| March 4, 1823 – March 4, 1825 | 5th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1827 | [data missing] |
| Lewis D. Campbell | Whig | March 4, 1849 – March 4, 1853 | 2nd | [data missing] |
| March 4, 1853 – March 3, 1855 | 3rd | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| Republican | March 4, 1857 – May 25, 1858 | Lost election challenge |
| Democratic | March 4, 1871 – March 4, 1873 | [data missing] |
| William Wildman Campbell | Republican | March 4, 1905 – March 4, 1907 | 5th | [data missing] |
| Richard S. Canby | Whig | March 4, 1847 – March 4, 1849 | 4th | [data missing] |
| Mike Carey | Republican | November 2, 2021 – present | 15th | Incumbent, elected to finishSteve Stivers's term |
| John Carey | Republican | March 4, 1859 – March 4, 1861 | 9th | [data missing] |
| Charles J. Carney | Democratic | November 3, 1970 – January 3, 1979 | 19th | [data missing] |
| Henderson H. Carson | Republican | January 3, 1943 – January 3, 1945 | 16th | [data missing] |
| January 3, 1947 – January 3, 1949 | [data missing] |
| David K. Cartter | Democratic | March 4, 1849 – March 4, 1853 | 18th | [data missing] |
| Samuel Fenton Cary | Independent Republican | November 21, 1867 – March 4, 1869 | 2nd | [data missing] |
| James H. Cassidy | Republican | March 4, 1909 – March 4, 1911 | 21st | [data missing] |
| John W. Cassingham | Democratic | March 4, 1901 – March 4, 1905 | 17th | [data missing] |
| Steve Chabot | Republican | January 3, 1995 – January 3, 2009 | 1st | [data missing] |
| January 3, 2011 – January 3, 2023 | Lost re-election to Landsman. |
| William W. Chalmers | Republican | March 4, 1921 – March 4, 1923 | 9th | [data missing] |
| March 4, 1925 – March 4, 1931 | [data missing] |
| David Chambers | Democratic-Republican | October 9, 1821 – March 4, 1823 | 4th | [data missing] |
| John Chaney | Jacksonian | March 4, 1833 – March 4, 1837 | 9th | [data missing] |
| Democratic | March 4, 1837 – March 4, 1839 | [data missing] |
| Donald D. Clancy | Republican | January 3, 1961 – January 3, 1977 | 2nd | [data missing] |
| Reader W. Clarke | Republican | March 4, 1865 – March 4, 1869 | 6th | [data missing] |
| Harold K. Claypool | Democratic | January 3, 1937 – January 3, 1943 | 11th | [data missing] |
| Horatio C. Claypool | Democratic | March 4, 1911 – March 4, 1915 | 11th | [data missing] |
| March 4, 1917 – March 4, 1919 | [data missing] |
| David Clendenin | Democratic-Republican | October 11, 1814 – March 4, 1817 | 6th | [data missing] |
| Cliff Clevenger | Republican | January 3, 1939 – January 3, 1959 | 5th | [data missing] |
| Joseph R. Cockerill | Democratic | March 4, 1857 – March 4, 1859 | 6th | [data missing] |
| Charles D. Coffin | Whig | December 20, 1837 – March 4, 1839 | 17th | [data missing] |
| R. Clint Cole | Republican | March 4, 1919 – March 4, 1925 | 8th | [data missing] |
| Ralph D. Cole | Republican | March 4, 1905 – March 4, 1911 | 8th | [data missing] |
| George L. Converse | Democratic | March 4, 1879 – March 4, 1881 | 9th | [data missing] |
| March 4, 1881 – March 4, 1883 | 12th | [data missing] |
| March 4, 1883 – March 4, 1885 | 13th | [data missing] |
| Robert E. Cook | Democratic | January 3, 1959 – January 3, 1963 | 11th | [data missing] |
| Eleutheros Cooke | Anti-Jacksonian | March 4, 1831 – March 4, 1833 | 14th | [data missing] |
| John G. Cooper | Republican | March 4, 1915 – January 3, 1937 | 19th | [data missing] |
| William C. Cooper | Republican | March 4, 1885 – March 4, 1891 | 9th | [data missing] |
| Moses B. Corwin | Whig | March 4, 1849 – March 4, 1851 | 4th | [data missing] |
| March 4, 1853 – March 4, 1855 | 8th | [data missing] |
| Thomas Corwin | Anti-Jacksonian | March 4, 1831 – March 4, 1833 | 2nd | [data missing] |
| March 4, 1833 – March 4, 1837 | 4th | [data missing] |
| Whig | March 4, 1837 – May 30, 1840 | Resigned after being nominatedGovernor |
| Republican | March 4, 1859 – March 12, 1861 | 7th | Resigned to becomeMinister to Mexico |
| Jacob P. Cowan | Democratic | March 4, 1875 – March 4, 1877 | 14th | [data missing] |
| Benjamin S. Cowen | Whig | March 4, 1841 – March 4, 1843 | 11th | [data missing] |
| Jacob D. Cox | Republican | March 4, 1877 – March 4, 1879 | 6th | [data missing] |
| James M. Cox | Democratic | March 4, 1909 – January 12, 1913 | 3rd | Resigned after being electedGovernor |
| Samuel S. Cox | Democratic | March 4, 1857 – March 4, 1863 | 12th | [data missing] |
| March 4, 1863 – March 4, 1865 | 7th | [data missing] |
| Joseph Halsey Crane | Anti-Jacksonian | March 4, 1829 – March 4, 1837 | 3rd | Retired |
| William Creighton Jr. | Democratic-Republican | May 4, 1813 – March 4, 1817 | 3rd | [data missing] |
| Anti-Jacksonian | March 4, 1827 – ??, 1828 | 6th | Resigned after being appointed as judge of theUS District Court of Ohio |
| Anti-Jacksonian | March 4, 1829 – March 4, 1833 | [data missing] |
| Frank Cremeans | Republican | January 3, 1995 – January 3, 1997 | 6th | [data missing] |
| Robert Crosser | Democratic | March 4, 1913 – March 4, 1915 | At-large | [data missing] |
| March 4, 1915 – March 4, 1919 | 21st | [data missing] |
| March 4, 1923 – January 3, 1955 | [data missing] |
| George W. Crouse | Republican | March 4, 1887 – March 4, 1889 | 20th | [data missing] |
| John Crowell | Whig | March 4, 1847 – March 4, 1851 | 19th | [data missing] |
| John D. Cummins | Democratic | March 4, 1845 – March 4, 1849 | 16th | [data missing] |
| Francis A. Cunningham | Democratic | March 4, 1845 – March 4, 1847 | 2nd | [data missing] |
| William P. Cutler | Republican | March 4, 1861 – March 4, 1863 | 16th | [data missing] |
| Lorenzo Danford | Republican | March 4, 1873 – March 4, 1879 | 16th | [data missing] |
| March 4, 1895 – June 19, 1899 | Died |
| John Davenport | Anti-Jacksonian | March 4, 1827 – March 4, 1829 | 10th | [data missing] |
| Martin L. Davey | Democratic | November 5, 1918 – March 4, 1921 | 14th | [data missing] |
| March 4, 1923 – March 4, 1929 | [data missing] |
| Warren Davidson | Republican | June 9, 2016 – present | 8th | Incumbent |
| Jacob E. Davis | Democratic | January 3, 1941 – January 3, 1943 | 6th | [data missing] |
| Beman G. Dawes | Republican | March 4, 1905 – March 4, 1909 | 15th | [data missing] |
| Rufus Dawes | Republican | March 4, 1881 – March 4, 1883 | 15th | [data missing] |
| Timothy Crane Day | Opposition | March 4, 1855 – March 4, 1857 | 1st | [data missing] |
| Francis Byron De Witt | Republican | March 4, 1895 – March 4, 1897 | 5th | [data missing] |
| Ezra Dean | Democratic | March 4, 1841 – March 4, 1845 | 18th | [data missing] |
| Columbus Delano | Whig | March 4, 1845 – March 4, 1847 | 10th | [data missing] |
| Republican | March 4, 1865 – March 4, 1867 | 13th | [data missing] |
| June 3, 1868 – March 4, 1869 | [data missing] |
| David S. Dennison Jr. | Republican | January 3, 1957 – January 3, 1959 | 11th | [data missing] |
| Matthew R. Denver | Democratic | March 4, 1907 – March 4, 1913 | 6th | [data missing] |
| Samuel L. Devine | Republican | January 3, 1959 – January 3, 1981 | 12th | [data missing] |
| Mike DeWine | Republican | January 3, 1983 – January 3, 1991 | 7th | [data missing] |
| Charles W. F. Dick | Republican | November 8, 1898 – March 23, 1904 | 19th | Resigned to become aUS Senator |
| Henry L. Dickey | Democratic | March 4, 1877 – March 4, 1879 | 7th | [data missing] |
| March 4, 1879 – March 4, 1881 | 11th |
| Edward F. Dickinson | Democratic | March 4, 1869 – March 4, 1871 | 9th | [data missing] |
| Rodolphus Dickinson | Democratic | March 4, 1847 – March 20, 1849 | 6th | Died |
| David Tiernan Disney | Democratic | March 4, 1849 – March 4, 1855 | 1st | [data missing] |
| Joseph A. Dixon | Democratic | January 3, 1937 – January 3, 1939 | 1st | [data missing] |
| Robert E. Doan | Republican | March 4, 1891 – March 4, 1893 | 10th | [data missing] |
| William Doan | Democratic | March 4, 1839 – March 4, 1843 | 5th | [data missing] |
| Ozro John Dodds | Democratic | October 8, 1872 – March 4, 1873 | 1st | [data missing] |
| Dennis D. Donovan | Democratic | March 4, 1891 – March 4, 1893 | 6th | [data missing] |
| March 4, 1893 – March 4, 1895 | 5th | [data missing] |
| Albert Douglas | Republican | March 4, 1907 – March 4, 1911 | 11th | [data missing] |
| Steve Driehaus | Democratic | January 3, 2009 – January 3, 2011 | 1st | [data missing] |
| Warren J. Duffey | Democratic | March 4, 1933 – July 7, 1936 | 9th | Died |
| Daniel Duncan | Whig | March 4, 1847 – March 4, 1849 | 10th | [data missing] |
| Alexander Duncan | Democratic | March 4, 1837 – March 4, 1841 | 1st | [data missing] |
| March 4, 1843 – March 4, 1845 | [data missing] |
| James I. Dungan | Democratic | March 4, 1891 – March 4, 1893 | 13th | [data missing] |
| Daniel S. Earhart | Democratic | November 3, 1936 – January 3, 1937 | At-large | [data missing] |
| Dennis E. Eckart | Democratic | January 3, 1981 – January 3, 1983 | 22nd | [data missing] |
| January 3, 1983 – January 3, 1993 | 11th | [data missing] |
| Ephraim R. Eckley | Republican | March 4, 1863 – March 4, 1869 | 17th | [data missing] |
| Alfred Peck Edgerton | Democratic | March 4, 1851 – March 4, 1855 | 5th | [data missing] |
| Sidney Edgerton | Republican | March 4, 1859 – March 4, 1863 | 18th | [data missing] |
| Thomas O. Edwards | Whig | March 4, 1847 – March 4, 1849 | 9th | [data missing] |
| Benjamin Eggleston | Republican | March 4, 1865 – March 4, 1869 | 1st | [data missing] |
| Andrew Ellison | Democratic | March 4, 1853 – March 4, 1855 | 6th | [data missing] |
| William W. Ellsberry | Democratic | March 4, 1885 – March 4, 1887 | 11th | [data missing] |
| Charles H. Elston | Republican | January 3, 1939 – January 3, 1953 | 1st | [data missing] |
| Henry Ivory Emerson | Republican | March 4, 1915 – March 4, 1921 | 22nd | [data missing] |
| Jonas R. Emrie | Opposition | March 4, 1855 – March 4, 1857 | 6th | [data missing] |
| William H. Enochs | Republican | March 4, 1891 – March 4, 1893 | 12th | [data missing] |
| March 4, 1893 – July 13, 1893 | 10th | Died |
| Nathan Evans | Whig | March 4, 1847 – March 4, 1851 | 14th | [data missing] |
| Thomas Ewing Jr. | Democratic | March 4, 1877 – March 4, 1879 | 12th | [data missing] |
| March 4, 1879 – March 4, 1881 | 10th | [data missing] |
| James J. Faran | Democratic | March 4, 1845 – March 4, 1849 | 1st | [data missing] |
| Edward F. Feighan | Democratic | January 3, 1983 – January 3, 1993 | 19th | [data missing] |
| Michael A. Feighan | Democratic | January 3, 1943 – January 3, 1971 | 20th | [data missing] |
| Lucien J. Fenton | Republican | March 4, 1895 – March 4, 1899 | 10th | [data missing] |
| Simeon D. Fess | Republican | March 4, 1913 – March 4, 1915 | 6th | [data missing] |
| March 4, 1915 – March 4, 1923 | 7th | [data missing] |
| William L. Fiesinger | Democratic | March 4, 1931 – January 3, 1937 | 13th | [data missing] |
| William E. Finck | Democratic | March 4, 1863 – March 4, 1867 | 12th | [data missing] |
| December 7, 1874 – March 4, 1875 | [data missing] |
| James Findlay | Jacksonian | March 4, 1825 – March 4, 1833 | 1st | [data missing] |
| Eric Fingerhut | Democratic | January 3, 1993 – January 3, 1995 | 19th | [data missing] |
| Ebenezer B. Finley | Democratic | March 4, 1877 – March 4, 1879 | 14th | [data missing] |
| March 4, 1879 – March 4, 1881 | 8th | [data missing] |
| David Fisher | Whig | March 4, 1847 – March 4, 1849 | 2nd | [data missing] |
| Roy G. Fitzgerald | Republican | March 4, 1921 – March 4, 1931 | 3rd | [data missing] |
| William T. Fitzgerald | Republican | March 4, 1925 – March 4, 1929 | 4th | [data missing] |
| Anthony A. Fleger | Democratic | January 3, 1937 – January 3, 1939 | 22nd | [data missing] |
| Thomas B. Fletcher | Democratic | March 4, 1925 – March 4, 1929 | 8th | [data missing] |
| March 4, 1933 – January 3, 1939 | [data missing] |
| Elias Florence | Whig | March 4, 1843 – March 4, 1845 | 9th | [data missing] |
| John Fassett Follett | Democratic | March 4, 1883 – March 4, 1885 | 1st | [data missing] |
| Martin A. Foran | Democratic | March 4, 1883 – March 4, 1889 | 21st | [data missing] |
| Israel M. Foster | Republican | March 4, 1919 – March 4, 1925 | 10th | [data missing] |
| Charles Foster | Republican | March 4, 1871 – March 4, 1873 | 9th | [data missing] |
| March 4, 1873 – March 4, 1879 | 10th | [data missing] |
| William B. Francis | Democratic | March 4, 1911 – March 4, 1915 | 16th | [data missing] |
| George Fries | Democratic | March 4, 1845 – March 4, 1849 | 17th | [data missing] |
| Marcia Fudge | Democratic | November 18, 2008 – March 10, 2021 | 11th | Resigned to becomeUnited States Secretary of Housing and Urban Development. |
| Harry C. Gahn | Republican | March 4, 1921 – March 4, 1923 | 21st | [data missing] |
| Samuel Galloway | Opposition | March 4, 1855 – March 4, 1857 | 12th | [data missing] |
| Martin K. Gantz | Democratic | March 4, 1891 – March 4, 1893 | 4th | [data missing] |
| Harvey C. Garber | Democratic | March 4, 1903 – March 4, 1907 | 4th | [data missing] |
| Warren Gard | Democratic | March 4, 1913 – March 4, 1921 | 3rd | [data missing] |
| Edward J. Gardner | Democratic | January 3, 1945 – January 3, 1947 | 3rd | [data missing] |
| Mills Gardner | Republican | March 4, 1877 – March 4, 1879 | 3rd | [data missing] |
| James A. Garfield | Republican | March 4, 1863 – November 8, 1880 | 19th | Resigned to becomePresident of the United States. |
| James M. Gaylord | Democratic | March 4, 1851 – March 4, 1853 | 13th | [data missing] |
| James William Gazlay | Democratic-Republican | March 4, 1823 – March 4, 1825 | 1st | [data missing] |
| George W. Geddes | Democratic | March 4, 1879 – March 4, 1881 | 15th | [data missing] |
| March 4, 1881 – March 4, 1885 | 14th | [data missing] |
| March 4, 1885 – March 4, 1887 | 16th | [data missing] |
| Bob Gibbs | Republican | January 3, 2011 – January 3, 2013 | 18th | [data missing] |
| January 3, 2013 – January 3, 2023 | 7th | Retired. |
| Joshua Giddings | Whig | December 3, 1838 – March 22, 1842 | 16th | Resigned |
| December 5, 1842 – March 4, 1843 | [data missing] |
| March 4, 1843 – March 4, 1849 | 20th | [data missing] |
| Free Soil | March 4, 1849 – March 4, 1855 | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| Joseph J. Gill | Republican | December 4, 1899 – October 31, 1903 | 16th | Resigned |
| John J. Gilligan | Democratic | January 3, 1965 – January 3, 1967 | 1st | [data missing] |
| Paul Gillmor | Republican | January 3, 1989 – September 5, 2007 | 5th | Died |
| Herman P. Goebel | Republican | March 4, 1903 – March 4, 1911 | 2nd | [data missing] |
| J. Henry Goeke | Democratic | March 4, 1911 – March 4, 1915 | 4th | [data missing] |
| Anthony Gonzalez | Republican | January 3, 2019 – January 3, 2023 | 16th | Retired. |
| Patrick Gaines Goode | Whig | March 4, 1837 – March 4, 1843 | 3rd | [data missing] |
| John M. Goodenow | Jacksonian | March 4, 1829 – April 9, 1830 | 11th | Resigned after becoming judge of theSupreme Court of Ohio. |
| Robert B. Gordon | Democratic | March 4, 1899 – March 4, 1903 | 4th | [data missing] |
| William Gordon | Democratic | March 4, 1913 – March 4, 1919 | 20th | [data missing] |
| Bill Gradison | Republican | January 3, 1975 – January 3, 1983 | 1st | [data missing] |
| January 3, 1983 – January 31, 1993 | 2nd | Resigned |
| Frederick W. Green | Democratic | March 4, 1851 – March 4, 1853 | 6th | [data missing] |
| March 4, 1853 – March 4, 1855 | 9th | [data missing] |
| Percy W. Griffiths | Republican | January 3, 1943 – January 3, 1949 | 15th | [data missing] |
| William S. Groesbeck | Democratic | March 4, 1857 – March 4, 1859 | 2nd | [data missing] |
| Charles H. Grosvenor | Republican | March 4, 1885 – March 4, 1887 | 14th | [data missing] |
| March 4, 1887 – March 4, 1891 | 15th | [data missing] |
| March 4, 1893 – March 4, 1907 | 11th | [data missing] |
| Lewis B. Gunckel | Republican | March 4, 1873 – March 4, 1875 | 4th | [data missing] |
| John A. Gurley | Republican | March 4, 1859 – March 4, 1863 | 2nd | [data missing] |
| Tennyson Guyer | Republican | January 3, 1973 – April 12, 1981 | 4th | Died. |
| Lawrence W. Hall | Democratic | March 4, 1857 – March 4, 1859 | 9th | [data missing] |
| Tony P. Hall | Democratic | January 3, 1979 – September 9, 2002 | 3rd | Resigned after being appointed Ambassador to theFood and Agriculture Organization of the United Nations. |
| Thomas L. Hamer | Jacksonian | March 4, 1833 – March 4, 1837 | 5th | [data missing] |
| Democratic | March 4, 1837 – March 4, 1839 | [data missing] |
| Cornelius S. Hamilton | Republican | March 4, 1867 – December 22, 1867 | 8th | Died. |
| Edward S. Hamlin | Whig | October 8, 1844 – March 4, 1845 | 21st | [data missing] |
| Peter Francis Hammond | Democratic | November 3, 1936 – January 3, 1937 | 11th | [data missing] |
| J. Eugene Harding | Republican | March 4, 1907 – March 4, 1909 | 3rd | [data missing] |
| Darius D. Hare | Democratic | March 4, 1891 – March 4, 1893 | 8th | [data missing] |
| March 4, 1893 – March 4, 1895 | 13th | [data missing] |
| Aaron Harlan | Whig | March 4, 1853 – March 4, 1855 | 7th | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| Byron B. Harlan | Democratic | March 4, 1931 – January 3, 1939 | 3rd | [data missing] |
| Alexander Harper | Whig | March 4, 1837 – March 4, 1839 | 12th | [data missing] |
| March 4, 1843 – March 4, 1847 | 14th | [data missing] |
| March 4, 1851 – March 4, 1853 | [data missing] |
| Stephen Ross Harris | Republican | March 4, 1895 – March 4, 1897 | 13th | [data missing] |
| John S. Harrison | Whig | March 4, 1853 – March 4, 1855 | 2nd | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| Richard A. Harrison | Union | July 4, 1861 – March 4, 1863 | 7th | [data missing] |
| William Henry Harrison | Democratic-Republican | October 8, 1816 – March 4, 1819 | 1st | [data missing] |
| Bill Harsha | Republican | January 3, 1961 – January 3, 1981 | 6th | [data missing] |
| Alphonso Hart | Republican | March 4, 1883 – March 4, 1885 | 12th | [data missing] |
| Dow W. Harter | Democratic | March 4, 1933 – January 3, 1943 | 14th | [data missing] |
| Michael D. Harter | Democratic | March 4, 1891 – March 4, 1893 | 15th | [data missing] |
| March 4, 1893 – March 4, 1895 | 14th | [data missing] |
| John Hastings | Democratic | March 4, 1839 – March 4, 1843 | 17th | [data missing] |
| Rutherford B. Hayes | Republican | March 4, 1865 – July 20, 1867 | 2nd | Resigned to run forGovernor. |
| William E. Haynes | Democratic | March 4, 1889 – March 4, 1891 | 10th | [data missing] |
| March 4, 1891 – March 4, 1893 | 7th | [data missing] |
| Wayne Hays | Democratic | January 3, 1949 – September 1, 1976 | 18th | Resigned. |
| Victor Heintz | Republican | March 4, 1917 – March 4, 1919 | 2nd | [data missing] |
| William Helmick | Republican | March 4, 1859 – March 4, 1861 | 15th | [data missing] |
| John E. Henderson | Republican | January 3, 1955 – January 3, 1961 | 15th | [data missing] |
| Samuel Herrick | Democratic-Republican | March 4, 1817 – March 4, 1821 | 4th | [data missing] |
| William E. Hess | Republican | March 4, 1929 – January 3, 1937 | 2nd | [data missing] |
| January 3, 1939 – January 3, 1949 | [data missing] |
| January 3, 1951 – January 3, 1961 | [data missing] |
| Charles Q. Hildebrant | Republican | March 4, 1901 – March 4, 1905 | 6th | [data missing] |
| William D. Hill | Democratic | March 4, 1879 – March 4, 1881 | 6th | [data missing] |
| March 4, 1883 – March 4, 1887 | [data missing] |
| Joseph H. Himes | Republican | March 4, 1921 – March 4, 1923 | 16th | [data missing] |
| Peter Hitchcock | Democratic-Republican | March 4, 1817 – March 4, 1819 | 6th | [data missing] |
| Truman H. Hoag | Democratic | March 4, 1869 – February 5, 1870 | 10th | Died |
| Moses Hoagland | Democratic | March 4, 1849 – March 4, 1851 | 16th | [data missing] |
| Dave Hobson | Republican | January 3, 1991 – January 3, 2009 | 7th | [data missing] |
| Martin R. Hoke | Republican | January 3, 1993 – January 3, 1997 | 10th | [data missing] |
| Greg J. Holbrock | Democratic | January 3, 1941 – January 3, 1943 | 3rd | [data missing] |
| David Hollingsworth | Republican | March 4, 1909 – March 4, 1911 | 16th | [data missing] |
| March 4, 1915 – March 4, 1919 | 18th | [data missing] |
| John B. Hollister | Republican | November 3, 1931 – January 3, 1937 | 1st | [data missing] |
| Valentine B. Horton | Opposition | March 4, 1855 – March 4, 1857 | 11th | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| March 4, 1861 – March 4, 1863 | [data missing] |
| George W. Houk | Democratic | March 4, 1891 – February 9, 1894 | 3rd | Died |
| William Howard | Democratic | March 4, 1859 – March 4, 1861 | 6th | [data missing] |
| Elias Howell | Anti-Jacksonian | March 4, 1835 – March 4, 1837 | 12th | [data missing] |
| L. Paul Howland | Republican | March 4, 1907 – March 4, 1913 | 20th | [data missing] |
| James R. Hubbell | Republican | March 4, 1865 – March 4, 1867 | 8th | [data missing] |
| Walter B. Huber | Democratic | January 3, 1945 – January 3, 1951 | 14th | [data missing] |
| George W. Hulick | Republican | March 4, 1893 – March 4, 1897 | 6th | [data missing] |
| John F. Hunter | Democratic | January 3, 1937 – January 3, 1943 | 9th | [data missing] |
| William F. Hunter | Whig | March 4, 1849 – March 4, 1853 | 15th | [data missing] |
| William H. Hunter | Democratic | March 4, 1837 – March 4, 1839 | 14th | [data missing] |
| Frank H. Hurd | Democratic | March 4, 1875 – March 4, 1877 | 6th | [data missing] |
| March 4, 1879 – March 4, 1881 | 7th | [data missing] |
| March 4, 1883 – March 4, 1885 | 10th | [data missing] |
| John Hutchins | Republican | March 4, 1859 – March 4, 1863 | 20th | [data missing] |
| Wells A. Hutchins | Democratic | March 4, 1863 – March 4, 1865 | 11th | [data missing] |
| George P. Ikirt | Democratic | March 4, 1893 – March 4, 1895 | 18th | [data missing] |
| Lawrence E. Imhoff | Democratic | March 4, 1933 – January 3, 1939 | 18th | [data missing] |
| January 3, 1941 – January 3, 1943 | [data missing] |
| William W. Irvin | Jacksonian | March 4, 1829 – March 4, 1833 | 9th | [data missing] |
| Amos H. Jackson | Republican | March 4, 1903 – March 4, 1905 | 13th | [data missing] |
| Harry P. Jeffrey | Republican | January 3, 1943 – January 3, 1945 | 3rd | [data missing] |
| Thomas A. Jenkins | Republican | March 4, 1925 – January 3, 1959 | 10th | [data missing] |
| David Jennings | Anti-Jacksonian | March 4, 1825 – May 25, 1826 | 10th | Resigned |
| Hugh J. Jewett | Democratic | March 4, 1873 – June 23, 1874 | 12th | Resigned to become President of theErie Railroad. |
| Adna R. Johnson | Republican | March 4, 1909 – March 4, 1911 | 10th | [data missing] |
| Bill Johnson | Republican | January 3, 2011 – January 21, 2024 | 6th | Resigned to become president ofYoungstown State University. |
| Harvey H. Johnson | Democratic | March 4, 1853 – March 4, 1855 | 14th | [data missing] |
| John Johnson | Democratic-Republican | March 4, 1851 – March 4, 1853 | 16th | [data missing] |
| Perley B. Johnson | Whig | March 4, 1843 – March 4, 1845 | 13th | [data missing] |
| Tom L. Johnson | Democratic | March 4, 1891 – March 4, 1895 | 21st | [data missing] |
| William Johnston | Democratic | March 4, 1863 – March 4, 1865 | 8th | [data missing] |
| Benjamin Jones | Jacksonian | March 4, 1833 – March 4, 1837 | 18th | [data missing] |
| John S. Jones | Republican | March 4, 1877 – March 4, 1879 | 9th | [data missing] |
| Robert Franklin Jones | Republican | January 3, 1939 – September 2, 1947 | 4th | Resigned after being appointed a member of theFederal Communications Commission. |
| Stephanie Tubbs Jones | Democratic | January 3, 1999 – August 20, 2008 | 11th | Died |
| Isaac M. Jordan | Democratic | March 4, 1883 – March 4, 1885 | 2nd | [data missing] |
| Jim Jordan | Republican | January 3, 2007 – present | 4th | Incumbent |
| David Joyce | Republican | January 3, 2013 – present | 14th | Incumbent |
| James Joyce | Republican | March 4, 1909 – March 4, 1911 | 15th | [data missing] |
| Marcy Kaptur | Democratic | January 3, 1983 – present | 9th | Incumbent |
| John Kasich | Republican | January 3, 1983 – January 3, 2001 | 12th | [data missing] |
| Charles C. Kearns | Republican | March 4, 1915 – March 4, 1931 | 6th | [data missing] |
| William J. Keating | Republican | January 3, 1971 – January 3, 1974 | 1st | Resigned |
| J. Warren Keifer | Republican | March 4, 1877 – March 4, 1879 | 8th | [data missing] |
| March 4, 1879 – March 4, 1881 | 4th | [data missing] |
| March 4, 1881 – March 4, 1885 | 8th | [data missing] |
| March 4, 1905 – March 4, 1911 | 7th | [data missing] |
| James Kennedy | Republican | March 4, 1903 – March 4, 1911 | 18th | [data missing] |
| Robert P. Kennedy | Republican | March 4, 1887 – March 4, 1891 | 8th | [data missing] |
| William Kennon Jr. | Democratic | March 4, 1847 – March 4, 1849 | 15th | [data missing] |
| William Kennon Sr. | Jacksonian | March 4, 1829 – March 4, 1833 | 10th | [data missing] |
| March 4, 1835 – March 4, 1837 | 11th | [data missing] |
| Winfield S. Kerr | Republican | March 4, 1895 – March 4, 1901 | 14th | [data missing] |
| John A. Key | Democratic | March 4, 1913 – March 4, 1915 | 13th | [data missing] |
| March 4, 1915 – March 4, 1919 | 8th | [data missing] |
| James Kilbourne | Democratic-Republican | March 4, 1813 – March 4, 1817 | 5th | [data missing] |
| Daniel Kilgore | Jacksonian | December 1, 1834 – March 4, 1837 | 19th | [data missing] |
| Democratic | March 4, 1837 – July 4, 1838 | Resigned |
| Mary Jo Kilroy | Democratic | January 3, 2009 – January 3, 2011 | 15th | [data missing] |
| Tom Kindness | Republican | January 3, 1975 – January 3, 1987 | 8th | [data missing] |
| Michael J. Kirwan | Democratic | January 3, 1937 – July 27, 1970 | 19th | Died |
| Frank L. Kloeb | Democratic | March 4, 1933 – August 19, 1937 | 4th | Resigned after being appointed judge of theU.S. District Court for the Northern District of Ohio |
| Frank C. Kniffin | Democratic | March 4, 1931 – January 3, 1939 | 5th | [data missing] |
| Charles L. Knight | Republican | March 4, 1921 – March 4, 1923 | 14th | [data missing] |
| Dennis Kucinich | Democratic | January 3, 1997 – January 3, 2013 | 10th | [data missing] |
| Thomas B. Kyle | Republican | March 4, 1901 – March 4, 1905 | 7th | [data missing] |
| Samuel Lahm | Democratic | March 4, 1847 – March 4, 1849 | 18th | [data missing] |
| Charles Nelson Lamison | Democratic | March 4, 1871 – March 4, 1875 | 5th | [data missing] |
| Arthur P. Lamneck | Democratic | March 4, 1931 – January 3, 1939 | 12th | [data missing] |
| Greg Landsman | Democratic | January 3, 2023 – present | 1st | Incumbent |
| J. Ford Laning | Republican | March 4, 1907 – March 4, 1909 | 14th | [data missing] |
| Steve LaTourette | Republican | January 3, 1995 – January 3, 2003 | 19th | [data missing] |
| January 3, 2003 – January 3, 2013 | 14th | [data missing] |
| Bob Latta | Republican | December 11, 2007 – present | 5th | Incumbent |
| Del Latta | Republican | January 3, 1959 – January 3, 1989 | 5th | [data missing] |
| William Lawrence | Democratic | March 4, 1857 – March 4, 1859 | 17th | [data missing] |
| William Lawrence | Republican | March 4, 1865 – March 4, 1871 | 4th | [data missing] |
| March 4, 1873 – March 4, 1877 | 8th | [data missing] |
| Fernando C. Layton | Democratic | March 4, 1891 – March 4, 1893 | 5th | [data missing] |
| March 4, 1893 – March 4, 1897 | 4th | [data missing] |
| Daniel P. Leadbetter | Democratic | March 4, 1837 – March 4, 1841 | 13th | [data missing] |
| Humphrey H. Leavitt | Jacksonian | December 6, 1830 – March 4, 1833 | 11th | [data missing] |
| March 4, 1833 – July 10, 1834 | 19th | Resigned to become a judge for theU.S. District Court for the District of Ohio |
| Francis Celeste LeBlond | Democratic | March 4, 1863 – March 4, 1867 | 5th | [data missing] |
| John P. Leedom | Democratic | March 4, 1881 – March 4, 1883 | 7th | [data missing] |
| Benjamin Le Fevre | Democratic | March 4, 1879 – March 4, 1883 | 5th | [data missing] |
| March 4, 1883 – March 4, 1885 | 4th | [data missing] |
| March 4, 1885 – March 4, 1887 | 5th | [data missing] |
| Benjamin Franklin Leiter | Opposition | March 4, 1855 – March 4, 1857 | 18th | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| John J. Lentz | Democratic | March 4, 1897 – March 4, 1901 | 12th | [data missing] |
| Robert W. Levering | Democratic | January 3, 1959 – January 3, 1961 | 17th | [data missing] |
| Earl R. Lewis | Republican | January 3, 1939 – January 3, 1941 | 18th | [data missing] |
| January 3, 1943 – January 3, 1949 | [data missing] |
| William D. Lindsley | Democratic | March 4, 1853 – March 4, 1855 | 13th | [data missing] |
| John Little | Republican | March 4, 1885 – March 4, 1887 | 8th | [data missing] |
| Alexander Long | Democratic | March 4, 1863 – March 4, 1865 | 2nd | [data missing] |
| Nicholas Longworth | Republican | March 4, 1903 – March 4, 1913 | 1st | [data missing] |
| March 4, 1915 – April 9, 1931 | Died |
| Andrew W. Loomis | Whig | March 4, 1837 – October 20, 1837 | 17th | Resigned |
| Rodney M. Love | Democratic | January 3, 1965 – January 3, 1967 | 3rd | [data missing] |
| Charlie Luken | Democratic | January 3, 1991 – January 3, 1993 | 1st | [data missing] |
| Tom Luken | Democratic | March 5, 1974 – January 3, 1975 | 1st | [data missing] |
| January 3, 1977 – January 3, 1983 | 2nd | [data missing] |
| January 3, 1983 – January 3, 1991 | 1st | [data missing] |
| Donald Buz Lukens | Republican | January 3, 1967 – January 3, 1971 | 24th | [data missing] |
| January 3, 1987 – October 24, 1990 | 8th | Resigned |
| Archibald Lybrand | Republican | March 4, 1897 – March 4, 1901 | 8th | [data missing] |
| Robert Todd Lytle | Jacksonian | March 4, 1833 – March 4, 1835 | 1st | resigned March 10, 1834, and re-elected to seat December 27 |
| David S. Mann | Democratic | January 3, 1993 – January 3, 1995 | 1st | [data missing] |
| George A. Marshall | Democratic | March 4, 1897 – March 4, 1899 | 4th | [data missing] |
| L. L. Marshall | Republican | January 3, 1939 – January 3, 1941 | At-large | [data missing] |
| Leroy T. Marshall | Republican | March 4, 1933 – January 3, 1937 | 7th | [data missing] |
| Charles D. Martin | Democratic | March 4, 1859 – March 4, 1861 | 11th | [data missing] |
| Samson Mason | Anti-Jacksonian | March 4, 1835 – March 4, 1837 | 10th | [data missing] |
| Whig | March 4, 1837 – March 4, 1843 | [data missing] |
| James Mathews | Democratic | March 4, 1841 – March 4, 1843 | 13th | [data missing] |
| March 4, 1843 – March 4, 1845 | 16th | [data missing] |
| Joshua Mathiot | Whig | March 4, 1841 – March 4, 1843 | 12th | [data missing] |
| Nelson Edwin Matthews | Republican | March 4, 1915 – March 4, 1917 | 5th | [data missing] |
| Duncan McArthur | Democratic-Republican | March 4, 1823 – March 4, 1825 | 6th | [data missing] |
| William C. McCauslen | Democratic | March 4, 1843 – March 4, 1845 | 17th | [data missing] |
| Charles B. McClintock | Republican | March 4, 1929 – March 4, 1933 | 16th | [data missing] |
| Addison S. McClure | Republican | March 4, 1881 – March 4, 1883 | 18th | [data missing] |
| March 4, 1895 – March 4, 1897 | 17th | [data missing] |
| John W. McCormick | Republican | March 4, 1883 – March 4, 1885 | 11th | [data missing] |
| Edward O. McCowen | Republican | January 3, 1943 – January 3, 1949 | 6th | [data missing] |
| Roscoe C. McCulloch | Republican | March 4, 1915 – March 4, 1921 | 16th | [data missing] |
| William M. McCulloch | Republican | November 4, 1947 – January 3, 1973 | 4th | [data missing] |
| John A. McDowell | Democratic | March 4, 1897 – March 4, 1901 | 17th | [data missing] |
| Joseph J. McDowell | Democratic | March 4, 1843 – March 4, 1847 | 7th | [data missing] |
| Bob McEwen | Republican | January 3, 1981 – January 3, 1993 | 6th | [data missing] |
| J. Harry McGregor | Republican | February 27, 1940 – October 7, 1958 | 17th | Died |
| William McKinley | Republican | March 4, 1877 – March 4, 1879 | 17th | [data missing] |
| March 4, 1879 – March 4, 1881 | 16th | [data missing] |
| March 4, 1881 – March 4, 1883 | 17th | [data missing] |
| March 4, 1883 – May 27, 1884 | 18th | Lost contested election |
| March 4, 1885 – March 4, 1887 | 20th | [data missing] |
| March 4, 1887 – March 4, 1891 | 18th | [data missing] |
| John F. McKinney | Democratic | March 4, 1863 – March 4, 1865 | 4th | [data missing] |
| March 4, 1871 – March 4, 1873 | [data missing] |
| John McLean | Democratic-Republican | March 4, 1813 – ??, 1816 | 1st | Resigned after becoming associate justice of theSupreme Court of Ohio |
| William McLean | Democratic-Republican | March 4, 1823 – March 4, 1825 | 3rd | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 | [data missing] |
| Jeremiah McLene | Jacksonian | March 4, 1833 – March 4, 1837 | 8th | [data missing] |
| John A. McMahon | Democratic | March 4, 1875 – March 4, 1879 | 4th | [data missing] |
| March 4, 1879 – March 4, 1881 | 3rd | [data missing] |
| John McSweeney | Democratic | March 4, 1923 – March 4, 1929 | 16th | [data missing] |
| January 3, 1937 – January 3, 1939 | At-large | [data missing] |
| January 3, 1949 – January 3, 1951 | 16th | [data missing] |
| William Medill | Democratic | March 4, 1839 – March 4, 1843 | 9th | [data missing] |
| David Meekison | Democratic | March 4, 1897 – March 4, 1901 | 5th | [data missing] |
| Clarence E. Miller | Republican | January 3, 1967 – January 3, 1993 | 10th | [data missing] |
| John K. Miller | Democratic | March 4, 1847 – March 4, 1851 | 11th | [data missing] |
| Joseph Miller | Democratic | March 4, 1857 – March 4, 1859 | 10th | [data missing] |
| Max Miller | Republican | January 3, 2023 – present | 7th | Incumbent |
| Ward Miller | Republican | November 8, 1960 – January 3, 1961 | 6th | [data missing] |
| William E. Minshall Jr. | Republican | January 3, 1955 – December 31, 1974 | 23rd | Resigned |
| Robert Mitchell | Jacksonian | March 4, 1833 – 1835 | 12th | [data missing] |
| Walter H. Moeller | Democratic | January 3, 1959 – January 3, 1963 | 10th | [data missing] |
| January 3, 1965 – January 3, 1967 | [data missing] |
| James Monroe | Republican | March 4, 1871 – March 4, 1873 | 14th | [data missing] |
| March 4, 1873 – March 4, 1879 | 18th | [data missing] |
| March 4, 1879 – March 4, 1881 | 17th | [data missing] |
| William C. Mooney | Republican | March 4, 1915 – March 4, 1917 | 15th | [data missing] |
| Charles A. Mooney | Democratic | March 4, 1919 – March 4, 1921 | 20th | [data missing] |
| March 4, 1923 – May 29, 1931 | Died |
| C. Ellis Moore | Republican | March 4, 1919 – March 4, 1933 | 15th | [data missing] |
| Eliakim H. Moore | Republican | March 4, 1869 – March 4, 1871 | 15th | [data missing] |
| Heman A. Moore | Democratic | March 4, 1843 – April 3, 1844 | 10th | Died |
| Oscar F. Moore | Opposition | March 4, 1855 – March 4, 1857 | 10th | [data missing] |
| Tom V. Moorehead | Republican | January 3, 1961 – January 3, 1963 | 15th | [data missing] |
| Henry Lee Morey | Republican | March 4, 1881 – March 4, 1883 | 3rd | [data missing] |
| March 4, 1883 – June 20, 1884 | 7th | Lost contested election |
| March 4, 1889 – March 4, 1891 | [data missing] |
| Stephen Morgan | Republican | March 4, 1899 – March 4, 1905 | 10th | [data missing] |
| William M. Morgan | Republican | March 4, 1921 – March 4, 1931 | 17th | [data missing] |
| George W. Morgan | Democratic | March 4, 1867 – June 3, 1868 | 13th | Lost contested election |
| March 4, 1869 – March 4, 1873 | [data missing] |
| Calvary Morris | Whig | March 4, 1837 – March 4, 1843 | 6th | [data missing] |
| James R. Morris | Democratic | March 4, 1861 – March 4, 1863 | 17th | [data missing] |
| March 4, 1863 – March 4, 1865 | 15th | [data missing] |
| Jonathan D. Morris | Democratic | March 4, 1847 – March 4, 1851 | 7th | [data missing] |
| Joseph Morris | Democratic | March 4, 1843 – March 4, 1847 | 15th | [data missing] |
| Jeremiah Morrow | Democratic-Republican | October 17, 1803 – March 4, 1813 | At-large | [data missing] |
| Whig | October 13, 1840 – March 4, 1843 | 4th | [data missing] |
| Charles A. Mosher | Republican | January 3, 1961 – January 3, 1977 | 13th | [data missing] |
| Harold G. Mosier | Democratic | January 3, 1937 – January 3, 1939 | At-large | [data missing] |
| Richard Mott | Opposition | March 4, 1855 – March 4, 1857 | 5th | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| Ronald M. Mottl | Democratic | January 3, 1975 – January 3, 1983 | 23rd | [data missing] |
| Grant E. Mouser Jr. | Republican | March 4, 1929 – March 4, 1933 | 8th | [data missing] |
| Grant E. Mouser | Republican | March 4, 1905 – March 4, 1909 | 13th | [data missing] |
| Francis Swaine Muhlenberg | Anti-Jacksonian | December 19, 1828 – March 4, 1829 | 6th | [data missing] |
| William Mungen | Democratic | March 4, 1867 – March 4, 1871 | 5th | [data missing] |
| B. Frank Murphy | Republican | March 4, 1919 – March 4, 1933 | 18th | [data missing] |
| Robert Maynard Murray | Democratic | March 4, 1883 – March 4, 1885 | 3rd | [data missing] |
| Henry S. Neal | Republican | March 4, 1877 – March 4, 1879 | 11th | [data missing] |
| March 4, 1879 – March 4, 1881 | 12th | [data missing] |
| March 4, 1881 – March 4, 1883 | 11th | [data missing] |
| Lawrence T. Neal | Democratic | March 4, 1873 – March 4, 1877 | 7th | [data missing] |
| Robert M. Nevin | Republican | March 4, 1901 – March 4, 1907 | 3rd | [data missing] |
| Eben Newton | Whig | March 4, 1851 – March 4, 1853 | 19th | [data missing] |
| Bob Ney | Republican | January 3, 1995 – November 3, 2006 | 18th | Resigned |
| Matthias H. Nichols | Democratic | March 4, 1853 – March 4, 1855 | 4th | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| Republican | March 4, 1857 – March 4, 1859 | [data missing] |
| Warren P. Noble | Democratic | March 4, 1861 – March 4, 1865 | 9th | [data missing] |
| Stephen A. Northway | Republican | March 4, 1893 – September 8, 1898 | 19th | Died |
| James A. Norton | Democratic | March 4, 1897 – March 4, 1903 | 13th | [data missing] |
| Miner Gibbs Norton | Republican | March 4, 1921 – March 4, 1923 | 20th | [data missing] |
| Robert H. Nugen | Democratic | March 4, 1861 – March 4, 1863 | 15th | [data missing] |
| John O'Neill | Democratic | March 4, 1863 – March 4, 1865 | 13th | [data missing] |
| Mary Rose Oakar | Democratic | January 3, 1977 – January 3, 1993 | 20th | [data missing] |
| Lewis P. Ohliger | Democratic | December 5, 1892 – March 4, 1893 | 16th | [data missing] |
| Edson B. Olds | Democratic | March 4, 1849 – March 4, 1853 | 9th | [data missing] |
| March 4, 1853 – March 4, 1855 | 12th | [data missing] |
| Joseph H. Outhwaite | Democratic | March 4, 1885 – March 4, 1891 | 13th | [data missing] |
| March 4, 1891 – March 4, 1893 | 9th | [data missing] |
| March 4, 1893 – March 4, 1895 | 12th | [data missing] |
| Arthur W. Overmyer | Democratic | March 4, 1915 – March 4, 1919 | 13th | [data missing] |
| James W. Owens | Democratic | March 4, 1889 – March 4, 1891 | 16th | [data missing] |
| March 4, 1891 – March 4, 1893 | 14th | [data missing] |
| Mike Oxley | Republican | June 25, 1981 – January 3, 2007 | 4th | [data missing] |
| David Raymond Paige | Democratic | March 4, 1883 – March 4, 1885 | 20th | [data missing] |
| Isaac Parrish | Democratic | March 4, 1839 – March 4, 1841 | 11th | [data missing] |
| March 4, 1845 – March 4, 1847 | 13th | [data missing] |
| Richard Chappel Parsons | Republican | March 4, 1873 – March 4, 1875 | 20th | [data missing] |
| John Patterson | Democratic-Republican | March 4, 1823 – March 4, 1825 | 10th | [data missing] |
| William Patterson | Jacksonian | March 4, 1833 – March 4, 1837 | 14th | [data missing] |
| John M. Pattison | Democratic | March 4, 1891 – March 4, 1893 | 11th | [data missing] |
| Henry B. Payne | Democratic | March 4, 1875 – March 4, 1877 | 20th | [data missing] |
| Albert J. Pearson | Democratic | March 4, 1891 – March 4, 1893 | 17th | [data missing] |
| March 4, 1893 – March 4, 1895 | 16th | [data missing] |
| Don Pease | Democratic | January 3, 1977 – January 3, 1993 | 13th | [data missing] |
| Erasmus D. Peck | Republican | April 23, 1870 – March 4, 1873 | 10th | [data missing] |
| George H. Pendleton | Democratic | March 4, 1857 – March 4, 1865 | 1st | [data missing] |
| Nathanael Greene Pendleton | Whig | March 4, 1841 – March 4, 1843 | 1st | [data missing] |
| Augustus L. Perrill | Democratic | March 4, 1845 – March 4, 1847 | 9th | [data missing] |
| Aaron Fyfe Perry | Republican | March 4, 1871 – ??, 1872 | 1st | Resigned |
| Fremont Orestes Phillips | Republican | March 4, 1899 – March 4, 1901 | 20th | [data missing] |
| Tobias A. Plants | Republican | March 4, 1865 – March 4, 1869 | 15th | [data missing] |
| James G. Polk | Democratic | March 4, 1931 – January 3, 1941 | 6th | [data missing] |
| January 3, 1949 – April 28, 1959 | Died |
| Earley F. Poppleton | Democratic | March 4, 1875 – March 4, 1877 | 9th | [data missing] |
| Rob Portman | Republican | May 4, 1993 – April 29, 2005 | 2nd | Resigned after being appointedU.S. Trade Representative |
| James D. Post | Democratic | March 4, 1911 – March 4, 1915 | 7th | [data missing] |
| Emery D. Potter | Democratic | March 4, 1843 – March 4, 1845 | 5th | [data missing] |
| March 4, 1849 – March 4, 1851 | [data missing] |
| Walter E. Powell | Republican | January 3, 1971 – January 3, 1973 | 24th | [data missing] |
| January 3, 1973 – January 3, 1975 | 8th | [data missing] |
| Deborah Pryce | Republican | January 3, 1993 – January 3, 2009 | 15th | [data missing] |
| Jacob J. Pugsley | Republican | March 4, 1887 – March 4, 1891 | 12th | [data missing] |
| Homer A. Ramey | Republican | January 3, 1943 – January 3, 1949 | 9th | [data missing] |
| Frazier Reams | Independent | January 3, 1951 – January 3, 1955 | 9th | [data missing] |
| Ralph Regula | Republican | January 3, 1973 – January 3, 2009 | 16th | [data missing] |
| Jim Renacci | Republican | January 3, 2011 – January 3, 2019 | 16th | [data missing] |
| Americus Vespucius Rice | Democratic | March 4, 1875 – March 4, 1879 | 5th | [data missing] |
| John B. Rice | Republican | March 4, 1881 – March 4, 1883 | 10th | [data missing] |
| Carl W. Rich | Republican | January 3, 1963 – January 3, 1965 | 1st | [data missing] |
| James A. D. Richards | Democratic | March 4, 1893 – March 4, 1895 | 17th | [data missing] |
| Edwin D. Ricketts | Republican | March 4, 1915 – March 4, 1917 | 11th | [data missing] |
| March 4, 1919 – March 4, 1923 | [data missing] |
| Albert Gallatin Riddle | Republican | March 4, 1861 – March 4, 1863 | 19th | [data missing] |
| Joseph Ridgway | Whig | March 4, 1837 – March 4, 1843 | 8th | [data missing] |
| Thomas Ritchey | Democratic | March 4, 1847 – March 4, 1849 | 13th | [data missing] |
| March 4, 1853 – March 4, 1855 | 11th | [data missing] |
| Byron F. Ritchie | Democratic | March 4, 1893 – March 4, 1895 | 9th | [data missing] |
| James M. Ritchie | Republican | March 4, 1881 – March 4, 1883 | 6th | [data missing] |
| James S. Robinson | Republican | March 4, 1881 – January 12, 1885 | 9th | Resigned to becomeOhio Secretary of State |
| James W. Robinson | Republican | March 4, 1873 – March 4, 1875 | 9th | [data missing] |
| Jacob Romeis | Republican | March 4, 1885 – March 4, 1889 | 10th | [data missing] |
| Joseph M. Root | Whig | March 4, 1845 – March 4, 1849 | 21st | [data missing] |
| Free Soil | March 4, 1849 – March 4, 1851 | [data missing] |
| Thomas R. Ross | Democratic-Republican | March 4, 1819 – March 4, 1823 | 1st | [data missing] |
| March 4, 1823 – March 4, 1825 | 2nd | [data missing] |
| Harry N. Routzohn | Republican | January 3, 1939 – January 3, 1941 | 3rd | [data missing] |
| Edmund Rowe | Republican | January 3, 1943 – January 3, 1945 | 14th | [data missing] |
| Michael Rulli | Republican | June 11, 2024 – present | 6th | Incumbent, elected to finishBill Johnson's term |
| J. Edward Russell | Republican | March 4, 1915 – March 4, 1917 | 4th | [data missing] |
| William Russell | Jacksonian | March 4, 1827 – March 4, 1833 | 5th | [data missing] |
| Whig | March 4, 1841 – March 4, 1843 | 7th | [data missing] |
| Tim Ryan | Democratic | January 3, 2003 – January 3, 2013 | 17th | [data missing] |
| January 3, 2013 – January 3, 2023 | 13th | Retired torun for U.S. senator. |
| Henry St. John | Democratic | March 4, 1843 – March 4, 1847 | 6th | [data missing] |
| William R. Sapp | Whig | March 4, 1853 – March 4, 1855 | 15th | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | [data missing] |
| John S. Savage | Democratic | March 4, 1875 – March 4, 1877 | 3rd | [data missing] |
| Thomas C. Sawyer | Democratic | January 3, 1987 – January 3, 2003 | 14th | [data missing] |
| William Sawyer | Democratic | March 4, 1845 – March 4, 1849 | 5th | [data missing] |
| Milton Sayler | Democratic | March 4, 1873 – March 4, 1879 | 1st | [data missing] |
| Paul F. Schenck | Republican | November 6, 1951 – January 3, 1965 | 3rd | [data missing] |
| Robert C. Schenck | Whig | March 4, 1843 – March 4, 1851 | 3rd | [data missing] |
| Republican | March 4, 1863 – January 5, 1871 | Resigned to becomeMinister to Great Britain |
| Gordon H. Scherer | Republican | January 3, 1953 – January 3, 1963 | 1st | [data missing] |
| Jean Schmidt | Republican | August 2, 2005 – January 3, 2013 | 2nd | [data missing] |
| Thomas E. Scroggy | Republican | March 4, 1905 – March 4, 1907 | 6th | [data missing] |
| James Seccombe | Republican | January 3, 1939 – January 3, 1941 | 16th | [data missing] |
| Robert T. Secrest | Democratic | March 4, 1933 – August 3, 1942 | 15th | Resigned to enter theUnited States Navy |
| January 3, 1949 – September 26, 1954 | Resigned to become a member of theFederal Trade Commission |
| January 3, 1963 – December 30, 1966 | Resigned |
| Francis Seiberling | Republican | March 4, 1929 – March 4, 1933 | 14th | [data missing] |
| John F. Seiberling Jr. | Democratic | January 3, 1971 – January 3, 1987 | 14th | [data missing] |
| George E. Seney | Democratic | March 4, 1883 – March 4, 1885 | 5th | [data missing] |
| March 4, 1885 – March 4, 1887 | 7th | [data missing] |
| March 4, 1887 – March 4, 1891 | 5th | [data missing] |
| Bob Shamansky | Democratic | January 3, 1981 – January 3, 1983 | 12th | [data missing] |
| Thomas Shannon | Anti-Jacksonian | December 4, 1826 – March 4, 1827 | 10th | [data missing] |
| Wilson Shannon | Democratic | March 4, 1853 – March 4, 1855 | 17th | [data missing] |
| William G. Sharp | Democratic | March 4, 1909 – July 23, 1914 | 14th | Resigned to becomeU.S. Ambassador to France |
| William Bunn Shattuc | Republican | March 4, 1897 – March 4, 1903 | 1st | [data missing] |
| Samuel Shellabarger | Republican | March 4, 1861 – March 4, 1863 | 8th | [data missing] |
| March 4, 1865 – March 4, 1869 | 7th | [data missing] |
| March 4, 1871 – March 4, 1873 | [data missing] |
| Matthias Shepler | Democratic | March 4, 1837 – March 4, 1839 | 18th | [data missing] |
| John Sherman | Opposition | March 4, 1855 – March 4, 1857 | 13th | [data missing] |
| Republican | March 4, 1857 – March 4, 1861 | [data missing] |
| Isaac R. Sherwood | Republican | March 4, 1873 – March 4, 1875 | 6th | [data missing] |
| Democratic | March 4, 1907 – March 4, 1921 | 9th | [data missing] |
| March 4, 1923 – March 4, 1925 | [data missing] |
| James Shields | Jacksonian | March 4, 1829 – March 4, 1831 | 2nd | [data missing] |
| Emanuel Shultz | Republican | March 4, 1881 – March 4, 1883 | 4th | [data missing] |
| William W. Skiles | Republican | March 4, 1901 – January 9, 1904 | 14th | Died |
| Jonathan Sloane | Anti-Masonic | March 4, 1833 – March 4, 1837 | 15th | [data missing] |
| John Sloane | Democratic-Republican | March 4, 1819 – March 4, 1823 | 6th | [data missing] |
| March 4, 1823 – March 4, 1825 | 12th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 | [data missing] |
| Frederick C. Smith | Republican | January 3, 1939 – January 3, 1951 | 8th | [data missing] |
| John Armstrong Smith | Republican | March 4, 1869 – March 4, 1873 | 6th | [data missing] |
| John Quincy Smith | Republican | March 4, 1873 – March 4, 1875 | 3rd | [data missing] |
| Martin L. Smyser | Republican | March 4, 1889 – March 4, 1891 | 20th | [data missing] |
| March 4, 1905 – March 4, 1907 | 17th | [data missing] |
| John Stout Snook | Democratic | March 4, 1901 – March 4, 1905 | 5th | [data missing] |
| March 4, 1917 – March 4, 1919 | [data missing] |
| Paul J. Sorg | Democratic | May 21, 1894 – March 4, 1897 | 3rd | [data missing] |
| James H. Southard | Republican | March 4, 1895 – March 4, 1907 | 9th | [data missing] |
| Milton I. Southard | Democratic | March 4, 1873 – March 4, 1879 | 13th | [data missing] |
| Zack Space | Democratic | January 3, 2007 – January 3, 2011 | 18th | [data missing] |
| Rufus Paine Spalding | Republican | March 4, 1863 – March 4, 1869 | 18th | [data missing] |
| David Spangler | Anti-Jacksonian | March 4, 1833 – March 4, 1837 | 13th | [data missing] |
| John C. Speaks | Republican | March 4, 1921 – March 4, 1931 | 12th | [data missing] |
| Cyrus Spink | Republican | March 4, 1859 – May 31, 1859 | 14th | Died |
| William P. Sprague | Republican | March 4, 1871 – March 4, 1875 | 15th | [data missing] |
| William Stanbery | Jacksonian | October 9, 1827 – March 4, 1831 | 8th | [data missing] |
| Anti-Jacksonian | March 4, 1831 – March 4, 1833 | [data missing] |
| J. William Stanton | Republican | January 3, 1965 – January 3, 1983 | 11th | [data missing] |
| James V. Stanton | Democratic | January 3, 1971 – January 3, 1977 | 20th | [data missing] |
| Benjamin Stanton | Whig | March 4, 1851 – March 4, 1853 | 4th | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 | 8th | [data missing] |
| Republican | March 4, 1857 – March 4, 1861 | [data missing] |
| David A. Starkweather | Democratic | March 4, 1839 – March 4, 1841 | 18th | [data missing] |
| March 4, 1845 – March 4, 1847 | [data missing] |
| Ambrose E. B. Stephens | Republican | March 4, 1919 – February 12, 1927 | 2nd | Died |
| Job E. Stevenson | Republican | March 4, 1869 – March 4, 1873 | 2nd | [data missing] |
| Steve Stivers | Republican | January 3, 2011 – May 16, 2021 | 15th | Resigned to become the president and CEO of the Ohio Chamber of Commerce. |
| Samuel Stokely | Whig | March 4, 1841 – March 4, 1843 | 19th | [data missing] |
| Louis Stokes | Democratic | January 3, 1969 – January 3, 1993 | 21st | [data missing] |
| January 3, 1993 – January 3, 1999 | 11th | [data missing] |
| Alfred P. Stone | Democratic | October 8, 1844 – March 4, 1845 | 10th | [data missing] |
| Bellamy Storer | Anti-Jacksonian | March 4, 1835 – March 4, 1837 | 1st | [data missing] |
| Bellamy Storer | Republican | March 4, 1891 – March 4, 1895 | 1st | [data missing] |
| Peter Wilson Strader | Democratic | March 4, 1869 – March 4, 1871 | 1st | [data missing] |
| Ted Strickland | Democratic | January 3, 1993 – January 3, 1995 | 6th | [data missing] |
| January 3, 1997 – January 3, 2007 | [data missing] |
| Luther M. Strong | Republican | March 4, 1893 – March 4, 1897 | 8th | [data missing] |
| Andrew Stuart | Democratic | March 4, 1853 – March 4, 1855 | 21st | [data missing] |
| Betty Sutton | Democratic | January 3, 2007 – January 3, 2013 | 13th | [data missing] |
| Henry Swearingen | Democratic | December 3, 1838 – March 4, 1841 | 19th | [data missing] |
| Martin L. Sweeney | Democratic | November 3, 1931 – January 3, 1943 | 20th | [data missing] |
| Robert E. Sweeney | Democratic | January 3, 1965 – January 3, 1967 | At-large | [data missing] |
| George Sweeny | Democratic | March 4, 1839 – March 4, 1843 | 14th | [data missing] |
| Charles Sweetser | Democratic | March 4, 1849 – March 4, 1853 | 10th | [data missing] |
| Robert M. Switzer | Republican | March 4, 1911 – March 4, 1919 | 10th | [data missing] |
| Emilia Sykes | Democratic | January 3, 2023 – present | 13th | Incumbent |
| Charles Phelps Taft | Republican | March 4, 1895 – March 4, 1897 | 1st | Retired |
| Robert Taft Jr. | Republican | January 3, 1963 – January 3, 1965 | At-large | Retired to run for U.S. Senate |
| January 3, 1967 – January 3, 1971 | 1st | Retired to run for U.S. Senate |
| Charles Tatgenhorst Jr. | Republican | November 8, 1927 – March 4, 1929 | 2nd | Elected to finishAmbrose E.B. Stephens's term
Retired |
| Robert Walker Tayler | Republican | March 4, 1895 – March 4, 1903 | 18th | Retired |
| David James Taylor | Republican | January 3, 2025 – present | 2nd | Incumbent |
| Edward L. Taylor Jr. | Republican | March 4, 1905 – March 4, 1913 | 12th | [data missing] |
| Ezra B. Taylor | Republican | December 13, 1880 – March 4, 1893 | 19th | [data missing] |
| Isaac Hamilton Taylor | Republican | March 4, 1885 – March 4, 1887 | 18th | [data missing] |
| John L. Taylor | Whig | March 4, 1847 – March 4, 1853 | 8th | [data missing] |
| March 4, 1853 – March 4, 1855 | 10th | [data missing] |
| Jonathan Taylor | Democratic | March 4, 1839 – March 4, 1841 | 12th | [data missing] |
| Joseph D. Taylor | Republican | January 2, 1883 – March 4, 1883 | 16th | [data missing] |
| March 4, 1883 – March 4, 1885 | 17th | [data missing] |
| March 4, 1887 – March 4, 1891 | [data missing] |
| March 4, 1891 – March 4, 1893 | 18th | [data missing] |
| Vincent Albert Taylor | Republican | March 4, 1891 – March 4, 1893 | 20th | [data missing] |
| Thomas C. Theaker | Republican | March 4, 1859 – March 4, 1861 | 17th | [data missing] |
| William R. Thom | Democratic | March 4, 1933 – January 3, 1939 | 16th | [data missing] |
| January 3, 1941 – January 3, 1943 | [data missing] |
| January 3, 1945 – January 3, 1947 | [data missing] |
| W. Aubrey Thomas | Republican | November 8, 1904 – March 4, 1911 | 19th | [data missing] |
| Charles J. Thompson | Republican | March 4, 1919 – March 4, 1931 | 5th | [data missing] |
| Albert C. Thompson | Republican | March 4, 1885 – March 4, 1887 | 12th | [data missing] |
| March 4, 1887 – March 4, 1891 | 11th | [data missing] |
| John Thomson | Jacksonian | March 4, 1825 – March 4, 1827 | 6th | [data missing] |
| March 4, 1829 – March 4, 1833 | 12th | [data missing] |
| March 4, 1833 – March 4, 1837 | 17th | [data missing] |
| Allen G. Thurman | Democratic | March 4, 1845 – March 4, 1847 | 8th | [data missing] |
| Pat Tiberi | Republican | January 3, 2001 – January 15, 2018 | 12th | Resigned January 15, 2018, to lead the Ohio Business Roundtable |
| Daniel Rose Tilden | Whig | March 4, 1843 – March 4, 1847 | 19th | [data missing] |
| Cydnor B. Tompkins | Republican | March 4, 1857 – March 4, 1861 | 16th | [data missing] |
| Emmett Tompkins | Republican | March 4, 1901 – March 4, 1903 | 12th | [data missing] |
| William E. Tou Velle | Democratic | March 4, 1907 – March 4, 1911 | 4th | [data missing] |
| Amos Townsend | Republican | March 4, 1877 – March 4, 1883 | 20th | [data missing] |
| Norton S. Townshend | Democratic | March 4, 1851 – March 4, 1853 | 21st | [data missing] |
| James Traficant | Democratic | January 3, 1985 – July 24, 2002 | 17th | Expelled after being convicted of federal corruption charges |
| Carey A. Trimble | Republican | March 4, 1859 – March 4, 1863 | 10th | [data missing] |
| Charles V. Truax | Democratic | March 4, 1933 – August 9, 1935 | At-large | Died |
| Mike Turner | Republican | January 3, 2003 – January 3, 2013 | 3rd | Incumbent |
| January 3, 2013 – present | 10th |
| Mell G. Underwood | Democratic | March 4, 1923 – April 10, 1936 | 11th | Resigned after becoming judge of theU.S. District Court for the Southern District of Ohio |
| Jonathan T. Updegraff | Republican | March 4, 1879 – March 4, 1881 | 18th | Died. |
| March 4, 1881 – November 30, 1882 | 16th |
| William Hanford Upson | Republican | March 4, 1869 – March 4, 1873 | 18th | [data missing] |
| Clement L. Vallandigham | Democratic | May 25, 1858 – March 4, 1863 | 3rd | [data missing] |
| Philadelph Van Trump | Democratic | March 4, 1867 – March 4, 1873 | 12th | [data missing] |
| H. Clay Van Voorhis | Republican | March 4, 1893 – March 4, 1905 | 15th | [data missing] |
| Nelson Holmes Van Vorhes | Republican | March 4, 1875 – March 4, 1879 | 15th | [data missing] |
| John L. Vance | Democratic | March 4, 1875 – March 4, 1877 | 11th | [data missing] |
| Joseph Vance | Democratic-Republican | March 4, 1821 – March 4, 1823 | 5th | [data missing] |
| March 4, 1823 – March 4, 1825 | 4th |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 |
| Anti-Jacksonian | March 4, 1829 – March 4, 1833 |
| March 4, 1833 – March 4, 1835 | 10th |
| Whig | March 4, 1843 – March 4, 1847 | 4th | [data missing] |
| Charles Vanik | Democratic | January 3, 1955 – January 3, 1969 | 21st | [data missing] |
| January 3, 1969 – January 3, 1981 | 22nd |
| John I. Vanmeter | Whig | March 4, 1843 – March 4, 1845 | 8th | [data missing] |
| Samuel Finley Vinton | Democratic-Republican | March 4, 1823 – March 4, 1825 | 7th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 |
| Anti-Jacksonian | March 4, 1829 – March 4, 1833 |
| March 4, 1833 – March 4, 1835 | 6th |
| Whig | March 4, 1835 – March 4, 1837 |
| March 4, 1843 – March 4, 1851 | 12th | [data missing] |
| John M. Vorys | Republican | January 3, 1939 – January 3, 1959 | 12th | [data missing] |
| Edward Wade | Free Soil | March 4, 1853 – March 4, 1855 | 19th | [data missing] |
| Opposition | March 4, 1855 – March 4, 1857 |
| Republican | March 4, 1857 – March 4, 1861 |
| Earl T. Wagner | Democratic | January 3, 1949 – January 3, 1951 | 2nd | [data missing] |
| Jonathan Hasson Wallace | Democratic | May 27, 1884 – March 4, 1885 | 18th | [data missing] |
| Ansel T. Walling | Democratic | March 4, 1875 – March 4, 1877 | 12th | [data missing] |
| Adoniram J. Warner | Democratic | March 4, 1879 – March 4, 1881 | 13th | [data missing] |
| March 4, 1883 – March 4, 1885 | 15th | [data missing] |
| March 4, 1885 – March 4, 1887 | 17th |
| William R. Warnock | Republican | March 4, 1901 – March 4, 1905 | 8th | [data missing] |
| John G. Warwick | Democratic | March 4, 1891 – August 14, 1892 | 16th | Died |
| Cooper K. Watson | Opposition | March 4, 1855 – March 4, 1857 | 9th | [data missing] |
| David K. Watson | Republican | March 4, 1895 – March 4, 1897 | 12th | [data missing] |
| Walter Lowrie Weaver | Republican | March 4, 1897 – March 4, 1901 | 7th | [data missing] |
| Amos R. Webber | Republican | November 8, 1904 – March 4, 1907 | 14th | [data missing] |
| Ed Weber | Republican | January 3, 1981 – January 3, 1983 | 9th | [data missing] |
| Taylor Webster | Jacksonian | March 4, 1833 – March 4, 1837 | 2nd | [data missing] |
| Democratic | March 4, 1837 – March 4, 1839 |
| Capell L. Weems | Republican | November 3, 1903 – March 4, 1909 | 16th | [data missing] |
| Alvin F. Weichel | Republican | January 3, 1943 – January 3, 1955 | 13th | [data missing] |
| John Welch | Whig | March 4, 1851 – March 4, 1853 | 12th | [data missing] |
| Martin Welker | Republican | March 4, 1865 – March 4, 1871 | 14th | [data missing] |
| John B. Weller | Democratic | March 4, 1839 – March 4, 1845 | 2nd | [data missing] |
| Benjamin F. Welty | Democratic | March 4, 1917 – March 4, 1921 | 4th | [data missing] |
| Brad Wenstrup | Republican | January 3, 2013 – January 3, 2025 | 2nd | Retired. |
| Charles F. West | Democratic | March 4, 1931 – January 3, 1935 | 17th | [data missing] |
| Charles W. Whalen Jr. | Republican | January 3, 1967 – January 3, 1979 | 3rd | [data missing] |
| John Jefferson Whitacre | Democratic | March 4, 1911 – March 4, 1915 | 18th | [data missing] |
| Chilton A. White | Democratic | March 4, 1861 – March 4, 1865 | 6th | [data missing] |
| Dudley A. White | Republican | January 3, 1937 – January 3, 1941 | 13th | [data missing] |
| George White | Democratic | March 4, 1911 – March 4, 1915 | 15th | [data missing] |
| March 4, 1917 – March 4, 1919 | [data missing] |
| Joseph W. White | Democratic | March 4, 1863 – March 4, 1865 | 16th | [data missing] |
| Wilbur M. White | Republican | March 4, 1931 – March 4, 1933 | 9th | [data missing] |
| William J. White | Republican | March 4, 1893 – March 4, 1895 | 20th | [data missing] |
| Elisha Whittlesey | Democratic-Republican | March 4, 1823 – March 4, 1825 | 13th | Resigned |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 |
| Anti-Jacksonian | March 4, 1829 – March 4, 1833 |
| Anti-Masonic | March 4, 1833 – March 4, 1835 | 16th |
| Whig | March 4, 1835 – July 9, 1838 |
| William A. Whittlesey | Democratic | March 4, 1849 – March 4, 1851 | 13th | [data missing] |
| Charles Preston Wickham | Republican | March 4, 1887 – March 4, 1891 | 14th | [data missing] |
| Beriah Wilkins | Democratic | March 4, 1883 – March 4, 1885 | 16th | [data missing] |
| March 4, 1885 – March 4, 1887 | 15th | [data missing] |
| March 4, 1887 – March 4, 1889 | 16th | [data missing] |
| Elihu S. Williams | Democratic | March 4, 1887 – March 4, 1891 | 3rd | [data missing] |
| Lyle Williams | Republican | January 3, 1979 – January 3, 1983 | 19th | [data missing] |
| January 3, 1983 – January 3, 1985 | 17th | [data missing] |
| Seward H. Williams | Republican | March 4, 1915 – March 4, 1917 | 14th | [data missing] |
| Frank B. Willis | Republican | March 4, 1911 – January 9, 1915 | 8th | Resigned after being electedGovernor |
| Charlie Wilson | Democratic | January 3, 2007 – January 3, 2011 | 6th | [data missing] |
| George W. Wilson | Republican | March 4, 1893 – March 4, 1897 | 7th | [data missing] |
| John Thomas Wilson | Republican | March 4, 1867 – March 4, 1873 | 11th | [data missing] |
| William Wilson | Democratic-Republican | March 4, 1823 – March 4, 1825 | 8th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – June 6, 1827 | Died |
| James J. Winans | Republican | March 4, 1869 – March 4, 1871 | 7th | [data missing] |
| Amos E. Wood | Democratic | December 3, 1849 – November 19, 1850 | 6th | Died |
| John Woods | Anti-Jacksonian | March 4, 1825 – March 4, 1829 | 2nd | [data missing] |
| Laurin D. Woodworth | Republican | March 4, 1873 – March 4, 1877 | 17th | [data missing] |
| Samuel T. Worcester | Republican | March 4, 1861 – March 4, 1863 | 13th | [data missing] |
| John C. Wright | Democratic-Republican | March 4, 1823 – March 4, 1825 | 11th | [data missing] |
| Anti-Jacksonian | March 4, 1825 – March 4, 1829 | [data missing] |
| Chalmers P. Wylie | Republican | January 3, 1967 – January 3, 1993 | 15th | [data missing] |
| Samuel S. Yoder | Democratic | March 4, 1887 – March 4, 1891 | 4th | [data missing] |
| Stephen M. Young | Democratic | March 4, 1933 – January 3, 1937 | At-large | [data missing] |
| January 3, 1941 – January 3, 1943 | [data missing] |
| January 3, 1949 – January 3, 1951 | [data missing] |
| Thomas L. Young | Republican | March 4, 1879 – March 4, 1883 | 2nd | [data missing] |
