Isaac Williams Jr. (April 5, 1777 inGoshen,Litchfield County, Connecticut – November 9, 1860 inCooperstown,Otsego County, New York) was an American politician fromNew York.
He received a limited schooling, and in 1793 moved with his father toOtsego County, New York. He was appointedUndersheriff of Otsego County in 1810, and Sheriff in 1811, remaining in office until 1813.
Hesuccessfully contested as aDemocratic-Republican the election of FederalistJohn M. Bowers to the13th United States Congress to fill the vacancy caused by the death of Representative-elect William Dowse (1770–1813), and served from January 24, 1814, to March 3, 1815. Williams was elected again, to the15th United States Congress, holding office from March 4, 1817 to March 3, 1819. He was then elected again, to the18th United States Congress, holding office from March 4, 1823, to March 3, 1825.
He was buried at the Warren Cemetery, inOtsego, New York.
| U.S. House of Representatives | ||
|---|---|---|
| Preceded by | Member of the U.S. House of Representatives fromNew York's 15th congressional district 1814–1815 withJoel Thompson | Succeeded by |
| Preceded by | Member of the U.S. House of Representatives fromNew York's 15th congressional district 1817–1819 withJohn R. Drake | Succeeded by |
| Preceded by | Member of the U.S. House of Representatives fromNew York's 13th congressional district 1823–1825 | Succeeded by |