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_ |
|---|---|---|---|---|
| Horace R. Kornegay | 1961–1969 | North Carolina | Democratic | 1924–2009 |
| Suzanne Kosmas | 2009–2011 | Florida | Democratic | 1944– |
| Peter H. Kostmayer | 1977–1981 , 1983–1993 | Pennsylvania | Democratic | 1946– |
| Frank Kowalski | 1959–1963 | Connecticut | Democratic | 1907–1974 |
| Charles Kramer | 1933–1943 | California | Democratic | 1879–1943 |
| Ken Kramer | 1979–1987 | Colorado | Republican | 1942– |
| Frank Kratovil | 2009–2011 | Maryland | Democratic | 1968– |
| Milton Kraus | 1917–1923 | Indiana | Republican | 1866–1942 |
| Jacob Krebs | 1826–1827 | Pennsylvania | Democratic | 1782–1847 |
| John Hans Krebs | 1975–1979 | California | Democratic | 1926– |
| Paul J. Krebs | 1965–1967 | New Jersey | Democratic | 1912–1996 |
| Aaron Shenk Kreider | 1913–1923 | Pennsylvania | Republican | 1863–1929 |
| Mike Kreidler | 1993–1995 | Washington | Democratic | 1943– |
| George Kremer | 1823–1825 | Pennsylvania | Democratic-Republican | 1775–1854 |
| George Kremer | 1825–1829 | Pennsylvania | Democratic | 1775–1854 |
| George Frederic Kribbs | 1891–1895 | Pennsylvania | Democratic | 1846–1938 |