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_ |
|---|---|---|---|---|
| Charles A. Kading | 1927–1933 | Wisconsin | Republican | 1874–1956 |
| Steve Kagen | 2007–2011 | Wisconsin | Democratic | 1949– |
| Florence Prag Kahn | 1925–1936 | California | Republican | 1866–1948 |
| Julius Kahn | 1899–1903 , 1905–1924 | California | Republican | 1861–1924 |
| Martin Kalbfleisch | 1863–1865 | New York | Democratic | 1804–1873 |
| Nicholas T. Kane | 1887 | New York | Democratic | 1846–1887 |
| Paul Kanjorski | 1985–2011 | Pennsylvania | Democratic | 1937– |
| Charles A. Karch | 1931–1932 | Illinois | Democratic | 1875–1932 |
| Raymond W. Karst | 1949–1951 | Missouri | Democratic | 1902–1987 |
| Frank M. Karsten | 1947–1969 | Missouri | Democratic | 1913–1992 |
| Joseph Karth | 1959–1977 | Minnesota | Democratic-Farmer-Labor | 1922–2005 |
| George A. Kasem | 1959–1961 | California | Democratic | 1919–2002 |
| John Kasich | 1983–2001 | Ohio | Republican | 1952– |
| John A. Kasson | 1863–1867 , 1873–1877 , 1881–1884 | Iowa | Republican | 1822–1910 |