| Anna Kingsford | English physician, activist a… | 1846–1888 |
| Charles Kingsley | English clergyman, historian … | 1819–1875 |
| Hugh Kingsmill | British writer and journalist | 1889–1949 |
| Dick King-Smith | English writer of children's … | 1922–2011 |
| Paul Kingsnorth | English writer and environmen… | 1972 |
| Barbara Kingsolver | American author, poet and ess… | 1955 |
| Maxine Hong Kingston | Chinese American author | 1940 |
| Mark Kingwell | Canadian philosopher | 1963 |
| Sam Kinison | American comedian | 1953–1992 |
| Thomas Kinkade | American painter of popular r… | 1958–2012 |
| Galway Kinnell | Poet | 1927–2014 |
| Ebenezer Kinnersley | American scientist | 1711–1778 |
| Nile Kinnick | College football player | 1918–1943 |
| Neil Kinnock | British politician | 1942 |
| Laura Kinsale | American writer | 1950 |
| Sophie Kinsella | British writer | 1969 |
| Alfred Kinsey | American scientist (1894–1956) | 1894–1956 |
| Klaus Kinski | German actor | 1926–1991 |
| Nastassja Kinski | German actress | 1961 |
| Michael Kinsley | American political journalist… | 1951 |
| Eliud Kipchoge | Kenyan long-distance runner | 1984 |
| Barbara Ann Kipfer | American linguist and lexicog… | 1954 |
| Rudyard Kipling | English short-story writer, p… | 1865–1936 |
| Jack Kirby | American comic book artist, w… | 1917–1994 |
| Gustav Kirchhoff | German physicist | 1824–1887 |
| Cristina Fernández de Kirchner | Argentine politician and ex P… | 1953 |
| Ernst Ludwig Kirchner | German painter, sculptor, eng… | 1880–1938 |
| Natsuo Kirino | Japanese writer | 1951 |
| Claude Kirk | American politician | 1926–2011 |
| Edward Norris Kirk | American Christian missionary… | 1802–1874 |
| Mark Kirk | former U.S. junior senator fr… | 1959 |
| Russell Kirk | American political theorist a… | 1918–1994 |
| Theodore Van Kirk | Recipient of the Silver Star | 1921–2014 |
| Will T. Kirk | Commissioner of the Oregon In… | 1884–1947 |
| Per Kirkeby | Danish artist | 1938–2018 |
| Lane Kirkland | American labor leader | 1922–1999 |
| Robert Kirkman | American comic book writer | 1978 |
| Jeane Kirkpatrick | American diplomat and Preside… | 1926–2006 |
| Walter Kirn | American novelist | 1962 |
| Irving Kirsch | medical researcher | 1943 |
| Hans Hellmut Kirst | German writer | 1914–1989 |
| Israel Kirzner | American economist | 1930 |
| Fumio Kishida | 100th~101st Prime Minister of… | 1957 |
| Masashi Kishimoto | Japanese manga artist | 1974 |
| Yukito Kishiro | Japanese manga artist | 1967 |
| Ephraim Kishon | Israeli author, dramatist, sc… | 1924–2005 |
| Madhu Kishwar | Indian activist and writer | 1959 |
| Jonathan Kis-Lev | painter | 1985 |
| Evgeny Kissin | Russian classical pianist | 1971 |
| Henry Kissinger | United States Secretary of St… | 1923–2023 |
| Michael Michai Kitbunchu | Catholic cardinal | 1929 |
| Jon Kitna | American football quarterback | 1972 |
| Abbott Eliot Kittredge | American minister | 1834–1912 |
| George Lyman Kittredge | American scholar, literary cr… | 1860–1941 |
| Aleksis Kivi | Finnish writer | 1834–1872 |
| Robert T. Kiyosaki | American finance author , inv… | 1947 |
| Carolyn Kizer | American poet | 1925–2014 |
| Ludwig Klages | German psychologist and philo… | 1872–1956 |
| Ron Klain | American lawyer | 1961 |
| Arjo Klamer | Dutch columnist, economist an… | 1953 |
| Michael Klaper | American physician | 1947 |
| David Klass | American writer | 1960 |
| Perri Klass | American pediatrician and wri… | 1958 |
| Ben Klassen | American engineer, author and… | 1918–1993 |
| Václav Klaus | 2nd President of the Czech Re… | 1941 |
| Annette Curtis Klause | American writer and librarian | 1953 |
| Jesse Klaver | Dutch politician and trade un… | 1986 |
| Klayton | American musician | 1970 |
| Paul Klee | German Swiss painter | 1879–1940 |
| Joel Kleefisch | US politician | 1971 |
| A. M. Klein | writer, journalist, lawyer | 1909–1972 |
| Herman Klein | British musical critic journa… | 1856–1934 |
| Joe Klein | American journalist | 1946 |
| Lawrence Klein | American economist | 1920–2013 |
| Melanie Klein | British psychoanalyst | 1882–1960 |
| Naomi Klein | Canadian author and activist | 1970 |
| Ralph Klein | Canadian politician | 1942–2013 |
| Yves Klein | French artist | 1928–1962 |
| Heinrich Von Kleist | German poet, dramatist, novel… | 1777–1811 |
| Paul Ludwig Ewald von Kleist | German general during World W… | 1881–1954 |
| Harold Klemp | American writer | 1942 |
| Victor Klemperer | Philologist, author of LTI – … | 1881–1960 |
| Frank Klepacki | American musician, video game… | 1974 |
| F. W. de Klerk | South African politician | 1936 |
| Lisa Kleypas | American writer | 1964 |
| B. Kliban | American cartoonist | 1935–1990 |
| Christina Baker Kline | American writer | 1964 |
| Franz Kline | American painter | 1910–1962 |
| Kevin Kline | American actor | 1947 |
| Morris Kline | American mathematician | 1908–1992 |
| Phill Kline | American politician | 1959 |
| Jürgen Klinsmann | German footballer and manager | 1964 |
| George Klir | American computer scientist | 1932–2016 |
| Vitali Klitschko | Ukrainian boxer and politician | 1971 |
| Amy Klobuchar | United States Senator from Mi… | 1960 |
| Julia Klöckner | German politician | 1972 |
| Jürgen Klopp | German association football p… | 1967 |
| Friedrich Gottlieb Klopstock | German poet, writer and lingu… | 1724–1803 |
| Klaus Klostermaier | German historian and philosop… | 1933 |
| Chuck Klosterman | Author, Columnist | 1972 |
