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_ |
|---|---|---|---|---|
| Elias Keyes | 1821–1823 | Vermont | Democratic-Republican | 1758–1844 |
| Martha Keys | 1975–1979 | Kansas | Democratic | 1930– |
| David Kidder | 1823–1827 | Maine | National Republican | 1787–1860 |
| Zedekiah Kidwell | 1853–1857 | Virginia | Democratic | 1814–1872 |
| Andrew Kiefer | 1893–1897 | Minnesota | Republican | 1832–1904 |
| Charles Edward Kiefner | 1925–1927 , 1929–1931 | Missouri | Republican | 1869–1942 |
| Edgar Raymond Kiess | 1913–1930 | Pennsylvania | Republican | 1875–1930 |
| James Kilbourne | 1813–1817 | Ohio | Democratic-Republican | 1770–1850 |
| Clarence E. Kilburn | 1940–1965 | New York | Republican | 1893–1975 |
| Paul J. Kilday | 1939–1961 | Texas | Democratic | 1900–1968 |
| Constantine B. Kilgore | 1887–1895 | Texas | Democratic | 1835–1897 |
| Daniel Kilgore | 1834–1838 | Ohio | Democratic | 1793–1851 |
| David Kilgore | 1857–1861 | Indiana | Republican | 1804–1879 |
| Joe M. Kilgore | 1955–1965 | Texas | Democratic | 1918–1999 |
| Joseph Kille | 1839–1841 | New Jersey | Democratic | 1790–1865 |