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_ |
|---|---|---|---|---|
| Laurence M. Keitt | 1853–1856 , 1856–1860 | South Carolina | Democratic | 1824–1864 |
| John A. Keliher | 1903–1911 | Massachusetts | Democratic | 1866–1938 |
| Kent E. Keller | 1931–1941 | Illinois | Democratic | 1867–1954 |
| Oscar Keller | 1919–1927 | Minnesota | Republican | 1878–1927 |
| Ric Keller | 2001–2009 | Florida | Republican | 1964– |
| Augustine B. Kelley | 1941–1957 | Pennsylvania | Democratic | 1883–1957 |
| Harrison Kelley | 1889–1891 | Kansas | Republican | 1836–1897 |
| John Edward Kelley | 1897–1899 | South Dakota | Populist | 1853–1941 |
| Patrick H. Kelley | 1913–1923 | Michigan | Republican | 1867–1925 |
| William D. Kelley | 1861–1890 | Pennsylvania | Republican | 1814–1890 |
| Charles Kellogg | 1825–1827 | New York | Democratic | 1773–1842 |
| Francis William Kellogg | 1859–1865 | Michigan | Republican | 1810–1879 |
| Francis William Kellogg | 1868–1869 | Alabama | Republican | 1810–1879 |
| Orlando Kellogg | 1847–1849 | New York | Whig | 1809–1865 |
| Orlando Kellogg | 1863–1865 | New York | Republican | 1809–1865 |