List of former members of the United States House of Representatives (K) Number of years/terms representative/delegate has served Number of years/terms representative/delegate has served

| Representative | Years | State_ | Party | Lifespan_ |
|---|---|---|---|---|
| William H. Kelsey | 1857–1859 , 1867–1871 | New York | Republican | 1812–1879 |
| John R. Kelso | 1865–1867 | Missouri | Independent Republican | 1831–1891 |
| Omer Madison Kem | 1891–1897 | Nebraska | Populist | 1855–1942 |
| Gouverneur Kemble | 1837–1841 | New York | Democratic | 1786–1875 |
| Bolivar E. Kemp | 1925–1933 | Louisiana | Democratic | 1871–1933 |
| Jack Kemp | 1971–1989 | New York | Republican | 1935–2009 |
| Thomas Kempshall | 1839–1841 | New York | Whig | 1795–1865 |
| Thomas Kenan | 1805–1811 | North Carolina | Democratic-Republican | 1771–1843 |
| Charles West Kendall | 1871–1875 | Nevada | Democratic | 1828–1914 |
| Elva R. Kendall | 1929–1931 | Kentucky | Republican | 1893–1968 |
| John W. Kendall | 1891–1892 | Kentucky | Democratic | 1834–1892 |
| Jonas Kendall | 1819–1821 | Massachusetts | Federalist | 1757–1844 |
| Joseph G. Kendall | 1829–1833 | Massachusetts | National Republican | 1788–1847 |
| Joseph M. Kendall | 1892–1893 , 1895–1897 | Kentucky | Democratic | 1863–1933 |