The following is an alphabetical list ofUnited States representatives from the state ofWisconsin. For chronological tables of members of both houses of theUnited States Congress from the state (through the present day), seeUnited States congressional delegations from Wisconsin.
Updated January 3, 2025.[1]
| Member/Delegate | Years | Party | District | Electoral history |
|---|---|---|---|---|
| Henry Cullen Adams | March 4, 1903 – July 9, 1906 | Republican | 2nd | Elected in 1902. Died. |
| Thomas Ryum Amlie | October 13, 1931 – March 3, 1933 | Republican | 1st | Elected to finish Cooper's term. Lost renomination to Blanchard. |
| January 3, 1935 – January 3, 1939 | Progressive | Elected in 1934. Retired torun for U.S. senator. | ||
| Les Aspin | January 3, 1971 – January 20, 1993 | Democratic | 1st | Elected in 1970. Resigned to becomeU.S. Secretary of Defense. |
| David Atwood | February 23, 1870 – March 3, 1871 | Republican | 2nd | Elected to finish Hopkins's term. Retired. |
| Clinton Babbitt | March 4, 1891 – March 3, 1893 | Democratic | 1st | Elected in 1890. Lost re-election to Cooper. |
| Joseph W. Babcock | March 4, 1893 – March 3, 1907 | Republican | 3rd | Elected in 1892. Lost re-election to Murphy. |
| Alvin Baldus | January 3, 1975 – January 3, 1981 | Democratic | 3rd | Elected in 1974. Lost re-election to Gunderson. |
| Tammy Baldwin | January 3, 1999 – January 3, 2013 | Democratic | 2nd | Elected in 1998. Retired torun for U.S. senator. |
| J. Allen Barber | March 4, 1871 – March 3, 1875 | Republican | 3rd | Elected in 1870. Retired. |
| Peter W. Barca | May 4, 1993 – January 3, 1995 | Democratic | 1st | Elected to finish Aspin's term. Lost re-election to Neumann. |
| Lyman E. Barnes | March 4, 1893 – March 3, 1895 | Democratic | 8th | Elected in 1892. Lost re-election to Minor. |
| Samuel S. Barney | March 4, 1895 – March 3, 1903 | Republican | 5th | Elected in 1894. Retired. |
| Tom Barrett | January 3, 1993 – January 3, 2003 | Democratic | 5th | Elected in 1992. Retired torun for governor. |
| Charles Barwig | March 4, 1889 – March 3, 1895 | Democratic | 2nd | Elected in 1888. Lost re-election to Sauerhering. |
| Joseph D. Beck | March 4, 1921 – March 3, 1929 | Republican | 7th | Elected in 1920. Retired torun for governor. |
| Victor L. Berger | March 4, 1911 – March 3, 1913 | Socialist | 5th | Elected in 1910. Lost re-election to Stafford. |
| March 4, 1923 – March 3, 1929 | Elected in 1922. Lost re-election to Stafford. | |||
| Andrew Biemiller | January 3, 1945 – January 3, 1947 | Democratic | 5th | Elected in 1944. Lost re-election to Kersten. |
| January 3, 1949 – January 3, 1951 | Elected in 1948. Lost re-election to Kersten. | |||
| Charles Billinghurst | March 4, 1855 – March 3, 1857 | Opposition | 3rd | Elected in 1854. Switched parties. |
| March 4, 1857 – March 3, 1859 | Republican | Re-elected in 1856 as a Republican. Lost re-election to Larrabee. | ||
| George W. Blanchard | March 4, 1933 – January 3, 1935 | Republican | 1st | Elected in 1932. Renominated but withdrew prior to election. |
| Gerald J. Boileau | March 4, 1931 – March 3, 1933 | Republican | 8th | Elected in 1930. Redistricted to the7th district. |
| March 4, 1933 – January 3, 1935 | 7th | Redistricted from the8th district andre-elected in 1932. Switched parties. | ||
| January 3, 1935 – January 3, 1939 | Progressive | Re-elected in 1934 as a Progressive. Lost re-election to Murray. | ||
| Stephen Bolles | January 3, 1939 – July 8, 1941 | Republican | 1st | Elected in 1938. Died. |
| Gabriel Bouck | March 4, 1877 – March 3, 1881 | Democratic | 6th | Elected in 1876. Lost re-election to Guenther. |
| Edward S. Bragg | March 4, 1877 – March 3, 1883 | Democratic | 5th | Elected in 1876. Redistricted to the2nd district and lost renomination to Sumner. |
| March 4, 1885 – March 3, 1887 | 2nd | Elected in 1884. Lost renomination toArthur Delaney. | ||
| George H. Brickner | March 4, 1889 – March 3, 1895 | Democratic | 5th | Elected in 1888. Retired. |
| John C. Brophy | January 3, 1947 – January 3, 1949 | Republican | 4th | Elected in 1946. Lost re-election to Zablocki. |
| James S. Brown | March 4, 1863 – March 3, 1865 | Democratic | 1st | Elected in 1862. Renominated but withdrew from re-election. |
| Webster E. Brown | March 4, 1901 – March 3, 1903 | Republican | 9th | Elected in 1900. Redistricted to the10th district. |
| March 4, 1903 – March 3, 1907 | 10th | Redistricted from the9th district andre-elected in 1902. Retired. | ||
| Edward E. Browne | March 4, 1913 – March 3, 1931 | Republican | 8th | Elected in 1912. Lost renomination to Boileau. |
| Samuel D. Burchard | March 4, 1875 – March 3, 1877 | Democratic | 5th | Elected in 1874. Lost renomination to Bragg. |
| Michael E. Burke | March 4, 1911 – March 3, 1913 | Democratic | 6th | Elected in 1910. Redistricted to the2nd district. |
| March 4, 1913 – March 3, 1917 | 2nd | Redistricted from the6th district andre-elected in 1912. Lost re-election to Voigt. | ||
| Allen R. Bushnell | March 4, 1891 – March 3, 1893 | Democratic | 3rd | Elected in 1890. Retired. |
| John W. Byrnes | January 3, 1945 – January 3, 1973 | Republican | 8th | Elected in 1944. Retired. |
| Raymond Joseph Cannon | March 4, 1933 – January 3, 1939 | Democratic | 4th | Elected in 1932. Lost renomination to Wasielewski and lost re-election as anindependent. |
| William J. Cary | March 4, 1907 – March 3, 1919 | Republican | 4th | Elected in 1906. Lost renomination to J.C. Kleczka. |
| Lucien B. Caswell | March 4, 1875 – March 3, 1883 | Republican | 2nd | Elected in 1874. Lost renomination. |
| March 4, 1885 – March 3, 1891 | Republican | 1st | Elected in 1884. Lost renomination. | |
| George W. Cate | March 4, 1875 – March 3, 1877 | Democratic | 8th | Elected in 1874. Lost re-election to Pound. |
| Charles B. Clark | March 4, 1887 – March 3, 1891 | Republican | 6th | Elected in 1886. Lost re-election to Miller. |
| David G. Classon | March 4, 1917 – March 3, 1923 | Republican | 9th | Elected in 1916. Retired. |
| Amasa Cobb | March 4, 1863 – March 3, 1871 | Republican | 3rd | Elected in 1862. Retired. |
| Frank P. Coburn | March 4, 1891 – March 3, 1893 | Democratic | 7th | Elected in 1890. Lost re-election to Shaw. |
| Orasmus Cole | March 4, 1849 – March 3, 1851 | Whig | 2nd | Elected in 1848. Lost re-election to Eastman. |
| Samuel A. Cook | March 4, 1895 – March 3, 1897 | Republican | 6th | Elected in 1894. Retired torun for U.S. senator. |
| Henry A. Cooper | March 4, 1893 – March 3, 1919 | Republican | 1st | Elected in 1892. Lost renomination to Randall and lost re-election as anindependent. |
| March 4, 1921 – March 1, 1931 | Elected in 1920. Re-elected but died before next term began. | |||
| Robert John Cornell | January 3, 1975 – January 3, 1979 | Democratic | 8th | Elected in 1974. Lost re-election to Roth. |
| Herman B. Dahle | March 4, 1899 – March 3, 1903 | Republican | 2nd | Elected in 1898. Lost renomination to Adams. |
| Mason Cook Darling | June 9, 1848 – March 3, 1849 | Democratic | 2nd | Elected to the short term. Retired. |
| James H. Davidson | March 4, 1897 – March 3, 1903 | Republican | 6th | Elected in 1896. Redistricted to the8th district. |
| March 4, 1903 – March 3, 1913 | 8th | Redistricted from the6th district andre-elected in 1902. Lost re-election to Browne. | ||
| March 4, 1917 – August 6, 1918 | 6th | Elected in 1916. Died. | ||
| Glenn Robert Davis | April 22, 1947 – January 3, 1957 | Republican | 2nd | Elected to finish Henry's term. Retired torun for U.S. senator. |
| January 3, 1965 – December 31, 1974 | 9th | Elected in 1964. Lost renomination to Kasten and resigned early. | ||
| Peter V. Deuster | March 4, 1879 – March 3, 1885 | Democratic | 4th | Elected in 1878. Lost re-election to Van Schaick. |
| LaVern R. Dilweg | January 3, 1943 – January 3, 1945 | Democratic | 8th | Elected in 1942. Lost re-election to Byrnes. |
| James D. Doty | January 14, 1839 – March 3, 1841 | Democratic | Territory | Elected in 1838. Retired. |
| March 4, 1849 – March 3, 1851 | 3rd | Elected in 1848. Switched parties. | ||
| March 4, 1851 – March 3, 1853 | Independent Democratic | Re-elected in 1850 as an Independent Democrat. Retired. | ||
| Sean Duffy | January 3, 2011 – September 23, 2019 | Republican | 7th | Elected in 2010. Resigned due to family health issues. |
| Charles Durkee | March 4, 1849 – March 3, 1853 | Free Soil Party | 1st | Elected in 1848. Retired. |
| Ben C. Eastman | March 4, 1851 – March 3, 1855 | Democratic | 2nd | Elected in 1850. Retired. |
| Charles A. Eldredge | March 4, 1863 – March 3, 1873 | Democratic | 4th | Elected in 1862. Redistricted to the5th district. |
| March 4, 1873 – March 3, 1875 | 5th | Redistricted from the4th district andre-elected in 1872. Lost renomination to Burchard. | ||
| John J. Esch | March 4, 1899 – March 3, 1921 | Republican | 7th | Elected in 1898. Lost renomination to Beck. |
| Scott L. Fitzgerald | January 3, 2021 – present | Republican | 5th | Elected in 2020. Incumbent |
| Gerald T. Flynn | January 3, 1959 – January 3, 1961 | Democratic | 1st | Elected in 1958. Lost re-election to Schadeberg. |
| James A. Frear | March 4, 1913 – March 3, 1933 | Republican | 10th | Elected in 1912. Redistricted to the9th district. |
| March 4, 1933 – January 3, 1935 | 9th | Redistricted from the10th district andre-elected in 1932. Retired. | ||
| Harold Vernon Froehlich | January 3, 1973 – January 3, 1975 | Republican | 8th | Elected in 1972. Lost re-election to Cornell. |
| Mike Gallagher | January 3, 2017 – April 24, 2024 | Republican | 8th | Elected in 2016. Resigned. |
| Bernard J. Gehrmann | January 3, 1935 – January 3, 1943 | Progressive | 10th | Elected in 1934. Lost re-election to O'Konski. |
| Mark Green | January 3, 1999 – January 3, 2007 | Republican | 8th | Elected in 1998. Retired torun for governor. |
| Michael Griffin | November 5, 1894 – March 3, 1899 | Republican | 7th | Elected to finish Shaw's term. Retired. |
| Harry W. Griswold | January 3, 1939 – July 4, 1939 | Republican | 3rd | Elected in 1938. Died. |
| Glenn Grothman | January 3, 2015 – present | Republican | 6th | Elected in 2014. Incumbent. |
| Richard W. Guenther | March 4, 1881 – March 3, 1887 | Republican | 6th | Elected in 1880. Redistricted to the2nd district. |
| March 4, 1887 – March 3, 1889 | 2nd | Redistricted from the6th district andre-elected in 1886. Retired. | ||
| Steve Gunderson | January 3, 1981 – January 3, 1997 | Republican | 3rd | Elected in 1980. Retired. |
| Luther Hanchett | March 4, 1861 – November 24, 1862 | Republican | 2nd | Elected in 1860. Died. |
| Nils P. Haugen | March 4, 1887 – March 3, 1893 | Republican | 8th | Elected in 1886. Redistricted to the10th district. |
| March 4, 1893 – March 3, 1895 | 10th | Redistricted from the8th district andre-elected in 1892. Retired torun for governor. | ||
| Charles Hawks Jr. | January 3, 1939 – January 3, 1941 | Republican | 2nd | Elected in 1938. Lost re-election to Sauthoff. |
| George Cochrane Hazelton | March 4, 1877 – March 3, 1883 | Republican | 3rd | Elected in 1876. Lost renomination. |
| Gerry Whiting Hazelton | March 4, 1871 – March 3, 1875 | Republican | 2nd | Elected in 1870. Retired. |
| Charles W. Henney | March 4, 1933 – January 3, 1935 | Democratic | 2nd | Elected in 1932. Lost re-election to Sauthoff. |
| Robert K. Henry | January 3, 1945 – November 20, 1946 | Republican | 2nd | Elected in 1944. Re-elected but died before next term began. |
| Benjamin F. Hopkins | March 4, 1867 – January 1, 1870 | Republican | 2nd | Elected in 1866. Died. |
| Thomas R. Hudd | March 8, 1886 – March 3, 1889 | Democratic | 5th | Elected to finish Rankin's term. Retired. |
| James F. Hughes | March 4, 1933 – January 3, 1935 | Democratic | 8th | Elected in 1932. Retired. |
| Merlin Hull | March 4, 1929 – March 3, 1931 | Republican | 7th | Elected in 1928. Lost renomination to Withrow. |
| January 3, 1935 – January 3, 1947 | Progressive | 9th | Elected in 1934. Switched parties. | |
| January 3, 1947 – May 17, 1953 | Republican | Re-elected in 1946 as a Republican. Died. | ||
| Herman L. Humphrey | March 4, 1877 – March 3, 1883 | Republican | 7th | Elected in 1876. Lost renomination. |
| John J. Jenkins | March 4, 1895 – March 3, 1903 | Republican | 10th | Elected in 1894. Redistricted to the11th district. |
| March 4, 1903 – March 3, 1909 | 11th | Redistricted from the10th district andre-elected in 1902. Lost renomination to Lenroot. | ||
| Joshua L. Johns | January 3, 1939 – January 3, 1943 | Republican | 8th | Elected in 1938. Lost re-election to Dilweg. |
| Jay W. Johnson | January 3, 1997 – January 3, 1999 | Democratic | 8th | Elected in 1996. Lost re-election to Green. |
| Lester Johnson | October 13, 1953 – January 3, 1965 | Democratic | 9th | Elected to finish Hull's term. Retired. |
| Burr W. Jones | March 4, 1883 – March 3, 1885 | Democratic | 3rd | Elected in 1882. Lost re-election to La Follette. |
| George Wallace Jones | January 26, 1837 – March 3, 1837 | Jacksonian | Territory | Redistricted from theMichigan Territory. Switched parties. |
| March 4, 1837 – January 14, 1839 | Democratic | Re-elected in 1836 as a Democrat. Election invalidated. | ||
| Henry Dodge | March 4, 1841 – March 3, 1845 | Democratic | Territory | Elected in 1840. Retired to becomeGovernor of Wisconsin Territory. |
| Morgan L. Martin | March 4, 1845 – March 3, 1847 | Democratic | Territory | Elected in 1844. Lost re-election to Tweedy. |
| John H. Tweedy | March 4, 1847 – May 28, 1848 | Whig | Territory | Elected in 1846. Resigned. |
| Henry H. Sibley | October 30, 1848 – March 3, 1849[a] | Democratic | Territory | Elected to finish Tweedy's term. Redistricted to theMinnesota Territory. |
| Charles A. Kading | March 4, 1927 – March 3, 1933 | Republican | 2nd | Elected in 1926. Lost renomination to John B. Gay. |
| Steve Kagen | January 3, 2007 – January 3, 2011 | Democratic | 8th | Elected in 2006. Lost re-election to Ribble. |
| Bob Kasten | January 3, 1975 – January 3, 1979 | Republican | 9th | Elected in 1974. Retired torun for governor. |
| Robert Kastenmeier | January 3, 1959 – January 3, 1991 | Democratic | 2nd | Elected in 1958. Lost re-election to Klug. |
| Frank Bateman Keefe | January 3, 1939 – January 3, 1951 | Republican | 6th | Elected in 1938. Retired. |
| Charles J. Kersten | January 3, 1947 – January 3, 1949 | Republican | 5th | Elected in 1946. Lost re-election to Biemiller. |
| January 3, 1951 – January 3, 1955 | Elected in 1950. Lost re-election to Reuss. | |||
| Alanson M. Kimball | March 4, 1875 – March 3, 1877 | Republican | 6th | Elected in 1874. Lost re-election to Bouck. |
| Ron Kind | January 3, 1997 – January 3, 2023 | Democratic | 3rd | Elected in 1996. Retired. |
| Jerry Kleczka | April 3, 1984 – January 3, 2005 | Democratic | 4th | Elected to finish Zablocki's term. Retired. |
| John C. Kleczka | March 4, 1919 – March 3, 1923 | Republican | 4th | Elected in 1918. Retired. |
| Scott L. Klug | January 3, 1991 – January 3, 1999 | Republican | 2nd | Elected in 1990. Retired. |
| Thomas F. Konop | March 4, 1911 – March 3, 1917 | Democratic | 9th | Elected in 1910. Lost re-election to Classon. |
| Arthur W. Kopp | March 4, 1909 – March 3, 1913 | Republican | 3rd | Elected in 1908. Retired. |
| Gustav Küstermann | March 4, 1907 – March 3, 1911 | Republican | 9th | Elected in 1906. Lost re-election to Konop. |
| Robert M. La Follette | March 4, 1885 – March 3, 1891 | Republican | 3rd | Elected in 1884. Lost re-election to Bushnell. |
| Melvin R. Laird | January 3, 1953 – January 21, 1969 | Republican | 7th | Elected in 1952. Resigned to becomeU.S. Secretary of Defense. |
| Florian Lampert | November 5, 1918 – July 18, 1930 | Republican | 6th | Elected to finish Davidson's term. Died. |
| Charles H. Larrabee | March 4, 1859 – March 3, 1861 | Democratic | 3rd | Elected in 1858. Lost re-election to A.S. Sloan. |
| Irvine Lenroot | March 4, 1909 – April 17, 1918 | Republican | 11th | Elected in 1908. Resigned whenelected U.S. senator. |
| Thomas Lynch | March 4, 1891 – March 3, 1895 | Democratic | 9th | Elected in 1890. Retired. |
| William Pitt Lynde | June 5, 1848 – March 3, 1849 | Democratic | 1st | Elected to the short term. Lost re-election to Durkee. |
| March 4, 1875 – March 3, 1879 | 4th | Elected in 1874. Retired. | ||
| John B. Macy | March 4, 1853 – March 3, 1855 | Democratic | 3rd | Elected in 1852. Lost re-election to Billinghurst. |
| Henry S. Magoon | March 4, 1875 – March 3, 1877 | Republican | 3rd | Elected in 1874. Lost renomination to G.C. Hazelton. |
| Myron H. McCord | March 4, 1889 – March 3, 1891 | Republican | 9th | Elected in 1888. Lost re-election to Lynch. |
| Alexander S. McDill | March 4, 1873 – March 3, 1875 | Republican | 8th | Elected in 1872. Lost re-election to Cate. |
| Walter D. McIndoe | January 26, 1863 – March 3, 1863 | Republican | 2nd | Elected to finish Hanchett's term. Redistricted to the6th district. |
| March 4, 1863 – March 3, 1867 | 6th | Redistricted from the2nd district andre-elected in 1862. Retired. | ||
| Howard J. McMurray | January 3, 1943 – January 3, 1945 | Democratic | 5th | Elected in 1942. Retired torun for U.S. Senator. |
| Lucas M. Miller | March 4, 1891 – March 3, 1893 | Democratic | 6th | Elected in 1890. Lost renomination to O. Wells. |
| Edward S. Minor | March 4, 1895 – March 3, 1903 | Republican | 8th | Elected in 1894. Redistricted to the9th district. |
| March 4, 1903 – March 3, 1907 | 9th | Redistricted from the8th district andre-elected in 1902. Lost renomination to Küstermann. | ||
| Alexander Mitchell | March 4, 1871 – March 3, 1873 | Democratic | 1st | Elected in 1870. Redistricted to the4th district. |
| March 4, 1873 – March 3, 1875 | 4th | Redistricted from the1st district andre-elected in 1872. Retired. | ||
| John L. Mitchell | March 4, 1891 – March 3, 1893 | Democratic | 4th | Elected in 1890. Re-elected but resigned whenelected U.S. senator. |
| James G. Monahan | March 4, 1919 – March 3, 1921 | Republican | 3rd | Elected in 1918. Lost renomination to J. Nelson. |
| Jim Moody | January 3, 1983 – January 3, 1993 | Democratic | 5th | Elected in 1982. Retired torun for U.S. senator. |
| Gwen Moore | January 3, 2005 – present | Democratic | 4th | Elected in 2004. Incumbent. |
| Elmer A. Morse | March 4, 1907 – March 3, 1913 | Republican | 10th | Elected in 1906. Lost re-election to Frear. |
| James William Murphy | March 4, 1907 – March 3, 1909 | Democratic | 3rd | Elected in 1906. Lost re-election to Kopp. |
| Reid F. Murray | January 3, 1939 – April 29, 1952 | Republican | 7th | Elected in 1938. Died. |
| Adolphus P. Nelson | November 5, 1918 – March 3, 1923 | Republican | 11th | Elected to finish Lenroot's term. Lost re-election to Peavey. |
| John M. Nelson | September 4, 1906 – March 3, 1913 | Republican | 2nd | Elected to finish Adams's term. Redistricted to the3rd district. |
| March 4, 1913 – March 3, 1919 | 3rd | Redistricted from the2nd district andre-elected in 1912. Lost renomination to Monahan. | ||
| March 4, 1921 – March 3, 1933 | Elected in 1920. Lost renomination to Withrow. | |||
| Mark Neumann | January 3, 1995 – January 3, 1999 | Republican | 1st | Elected in 1994. Retired torun for U.S. senator. |
| Alvin O'Konski | January 3, 1943 – March 3, 1973 | Republican | 10th | Elected in 1942. Redistricted to the7th district and lost re-election to Obey. |
| Thomas O'Malley | March 4, 1933 – January 3, 1939 | Democratic | 5th | Elected in 1932. Lost re-election to Thill. |
| Dave Obey | April 1, 1969 – January 3, 2011 | Democratic | 7th | Elected to finish Laird's term. Retired. |
| Theobald Otjen | March 4, 1895 – March 3, 1907 | Republican | 4th | Elected in 1894. Lost renomination to Cary. |
| Halbert E. Paine | March 4, 1865 – March 3, 1871 | Republican | 1st | Elected in 1864. Retired. |
| Hubert H. Peavey | March 4, 1923 – March 3, 1933 | Republican | 11th | Elected in 1922. Redistricted to the10th district. |
| March 4, 1933 – January 3, 1935 | 10th | Redistricted from the11th district andre-elected in 1932. Lost re-election to Gehrmann. | ||
| Tom Petri | April 3, 1979 – January 3, 2015 | Republican | 6th | Elected to finish Steiger's term. Retired. |
| Mark Pocan | January 3, 2013 – present | Democratic | 2nd | Elected in 2012. Incumbent. |
| John F. Potter | March 4, 1857 – March 3, 1863 | Republican | 1st | Elected in 1856. Lost re-election to J. Brown. |
| Thaddeus C. Pound | March 4, 1877 – March 3, 1883 | Republican | 8th | Elected in 1876. Retired. |
| Hugh H. Price | January 18, 1887 – March 3, 1887 | Republican | 8th | Elected to finish his father's term. Retired. |
| William T. Price | March 4, 1883 – December 6, 1886 | Republican | 8th | Elected in 1882. Died. |
| John Abner Race | January 3, 1965 – January 3, 1967 | Democratic | 6th | Elected in 1964. Lost re-election to Steiger. |
| Clifford E. Randall | March 4, 1919 – March 3, 1921 | Republican | 1st | Elected in 1918. Lost renomination to Cooper. |
| Joseph Rankin | March 4, 1883 – January 24, 1886 | Democratic | 5th | Elected in 1882. Died. |
| Michael K. Reilly | March 4, 1913 – March 3, 1917 | Democratic | 6th | Elected in 1912. Lost re-election to Davidson. |
| November 4, 1930 – January 3, 1939 | Elected to finish Lampert's term. Lost re-election to Keefe. | |||
| Henry S. Reuss | January 3, 1955 – January 3, 1983 | Democratic | 5th | Elected in 1954. Retired. |
| Reid Ribble | January 3, 2011 – January 3, 2017 | Republican | 8th | Elected in 2010. Retired. |
| Toby Roth | January 3, 1979 – January 3, 1997 | Republican | 8th | Elected in 1978. Retired. |
| Jeremiah McLain Rusk | March 4, 1871 – March 3, 1873 | Republican | 6th | Elected in 1870. Redistricted to the7th district. |
| March 4, 1873 – March 3, 1877 | 7th | Redistricted from the6th district andre-elected in 1872. Retired. | ||
| Paul Ryan | January 3, 1999 – January 3, 2019 | Republican | 1st | Elected in 1998. Retired. |
| Edward Sauerhering | March 4, 1895 – March 3, 1899 | Republican | 2nd | Elected in 1894. Retired. |
| Harry Sauthoff | January 3, 1935 – January 3, 1939 | Progressive | 2nd | Elected in 1934. Lost re-election to Hawks. |
| January 3, 1941 – January 3, 1945 | Elected in 1940. Lost re-election to Henry. | |||
| Philetus Sawyer | March 4, 1865 – March 3, 1873 | Republican | 5th | Elected in 1864. Redistricted to the6th district. |
| March 4, 1873 – March 3, 1875 | 6th | Redistricted from the5th district andre-elected in 1872. Retired. | ||
| Henry C. Schadeberg | January 3, 1961 – January 3, 1965 | Republican | 1st | Elected in 1960. Lost re-election to Stalbaum. |
| January 3, 1967 – January 3, 1971 | Elected in 1966. Lost re-election to Aspin. | |||
| John C. Schafer | March 4, 1923 – March 3, 1933 | Republican | 4th | Elected in 1922. Lost re-election to Cannon. |
| January 3, 1939 – January 3, 1941 | Elected in 1938. Lost re-election to Wasielewski. | |||
| George J. Schneider | March 4, 1923 – March 3, 1933 | Republican | 9th | Elected in 1922. Redistricted to the8th district and lost re-election to Hughes. |
| January 3, 1935 – January 3, 1939 | Progressive | 8th | Elected in 1934. Lost re-election to Johns. | |
| Jim Sensenbrenner | January 3, 1979 – January 3, 2003 | Republican | 9th | Elected in 1978. Redistricted to the5th district. |
| January 3, 2003 – January 3, 2021 | 5th | Redistricted from the9th district andre-elected in 2002. Retired. | ||
| George B. Shaw | March 4, 1893 – August 27, 1894 | Republican | 7th | Elected in 1892. Died. |
| A. Scott Sloan | March 4, 1861 – March 3, 1863 | Republican | 3rd | Elected in 1860. Retired. |
| Ithamar Sloan | March 4, 1863 – March 3, 1867 | Republican | 2nd | Elected in 1862. Retired. |
| Henry Smith | March 4, 1887 – March 3, 1889 | Laborite | 4th | Elected in 1886. Lost re-election to Van Schaick. |
| Lawrence H. Smith | August 29, 1941 – January 22, 1958 | Republican | 1st | Elected to finish Bolles's term. Died. |
| Peter J. Somers | August 27, 1893 – March 3, 1895 | Democratic | 4th | Elected to finish Mitchell's term. Retired. |
| William H. Stafford | March 4, 1903 – March 3, 1911 | Republican | 5th | Elected in 1902. Lost renomination. |
| March 4, 1913 – March 3, 1919 | Elected in 1912. Lost re-election to Berger.[b] | |||
| March 4, 1921 – March 3, 1923 | Elected in 1920. Lost re-election to Berger | |||
| March 4, 1929 – March 3, 1933 | Elected in 1928. Lost renomination to Joseph A. Padway. | |||
| Lynn E. Stalbaum | January 3, 1965 – January 3, 1967 | Democratic | 1st | Elected in 1964. Lost re-election to Schadeberg. |
| William A. Steiger | January 3, 1967 – December 4, 1978 | Republican | 6th | Elected in 1966. Re-elected but died before next term began. |
| Bryan Steil | January 3, 2019 – present | Republican | 1st | Elected in 2018. Incumbent. |
| Isaac Stephenson | March 4, 1883 – March 3, 1889 | Republican | 9th | Elected in 1882. Retired. |
| William H. Stevenson | January 3, 1941 – January 3, 1949 | Republican | 3rd | Elected in 1940. Lost renomination to Withrow. |
| Alexander Stewart | March 4, 1895 – March 3, 1901 | Republican | 9th | Elected in 1894. Retired. |
| Daniel H. Sumner | March 4, 1883 – March 3, 1885 | Democratic | 2nd | Elected in 1882. Retired. |
| Donald Edgar Tewes | January 3, 1957 – January 3, 1959 | Republican | 2nd | Elected in 1956. Lost re-election to Kastenmeier. |
| Lewis D. Thill | January 3, 1939 – January 3, 1943 | Republican | 5th | Elected in 1938. Lost re-election to McMurray. |
| Ormsby B. Thomas | March 4, 1885 – March 3, 1891 | Republican | 7th | Elected in 1884. Lost re-election to Coburn. |
| Vernon Wallace Thomson | January 3, 1961 – December 31, 1974 | Republican | 3rd | Elected in 1960. Lost re-election to Baldus and resigned early. |
| William Van Pelt | January 3, 1951 – January 3, 1965 | Republican | 6th | Elected in 1950. Lost re-election to Race. |
| Isaac W. Van Schaick | March 4, 1885 – March 3, 1887 | Republican | 4th | Elected in 1884. Retired. |
| March 4, 1889 – March 3, 1891 | Elected in 1888. Retired to run forstate senator. | |||
| Tom Tiffany | May 12, 2020 – present | Republican | 7th | Elected to finish Duffy's term. Incumbent. |
| Derrick Van Orden | January 3, 2023 – present | Republican | 3rd | Elected in 2022. Incumbent. |
| Edward Voigt | March 4, 1917 – March 3, 1927 | Republican | 2nd | Elected in 1916. Retired. |
| Cadwallader C. Washburn | March 4, 1855 – March 3, 1861 | Republican | 2nd | Elected in 1854. Retired. |
| March 4, 1867 – March 3, 1871 | 6th | Elected in 1866. Retired. | ||
| Thad F. Wasielewski | January 3, 1941 – January 3, 1947 | Democratic | 4th | Elected in 1940. Lost renomination toEdmund V. Bobrowicz and lost re-election as anindependent. |
| Charles H. Weisse | March 4, 1903 – March 3, 1911 | Democratic | 6th | Elected in 1902. Retired. |
| Daniel Wells Jr. | March 4, 1853 – March 3, 1857 | Democratic | 1st | Elected in 1852. Retired. |
| Owen A. Wells | March 4, 1893 – March 3, 1895 | Democratic | 6th | Elected in 1892. Lost re-election to Cook. |
| Ezra Wheeler | March 4, 1863 – March 3, 1865 | Democratic | 5th | Elected in 1862. Retired. |
| Tony Wied | November 5, 2024 – present | Republican | 8th | Elected to finish Gallagher's term. Incumbent. |
| Charles G. Williams | March 4, 1873 – March 3, 1883 | Republican | 1st | Elected in 1872. Lost re-election to Winans. |
| John Winans | March 4, 1883 – March 3, 1885 | Democratic | 1st | Elected in 1882. Retired to run for mayor ofJanesville. |
| Gardner R. Withrow | March 4, 1931 – March 3, 1933 | Republican | 7th | Elected in 1930. Redistricted to the3rd district. |
| March 4, 1933 – January 3, 1935 | 3rd | Redistricted from the7th district andre-elected in 1932. Switched parties. | ||
| January 3, 1935 – January 3, 1939 | Progressive | Re-elected in 1934 as a Progressive. Lost re-election to Griswold. | ||
| January 3, 1949 – January 3, 1961 | Republican | Elected in 1948. Retired. | ||
| Gilbert M. Woodward | March 4, 1883 – March 3, 1885 | Democratic | 7th | Elected in 1882. Lost re-election to Thomas. |
| Clement J. Zablocki | January 3, 1949 – December 3, 1983 | Democratic | 4th | Elected in 1948. Died. |
