| George Michael Sinclair Kennedy | British historian | 1926–2014 |
| Jimmy Kennedy | Irish songwriter | 1902–1984 |
| John F. Kennedy | 35th president of the United … | 1917–1963 |
| Margrit Kennedy | German architect | 1939–2013 |
| Robert F. Kennedy | American politician and broth… | 1925–1968 |
| Rose Fitzgerald Kennedy | American philanthropist and m… | 1890–1995 |
| Ted Kennedy | United States Senator | 1932–2009 |
| X. J. Kennedy | American writer | 1929 |
| Julie Kenner | American writer | |
| Peter Kenneth | politician | 1965 |
| Arthur Kenney | Irish dean | 1776–1855 |
| Ben Kenney | American musician | 1977 |
| Jason Kenney | Canadian politician and 18th … | 1968 |
| Anthony Kenny | British philosopher | 1931 |
| Enda Kenny | Irish Fine Gael politician an… | 1951 |
| Tom Kenny | American actor | 1962 |
| Uesugi Kenshin | Japanese daimyo | 1530–1578 |
| Patsy Kensit | British actress | 1968 |
| Broody Kent | | |
| Rockwell Kent | American artist | 1882–1971 |
| Jomo Kenyatta | First prime minister and firs… | 1893–1978 |
| Uhuru Kenyatta | Kenyan politician | 1961 |
| Frederic G. Kenyon | British palaeographer and bib… | 1863–1952 |
| Jane Kenyon | American poet, translator | 1947–1995 |
| Lloyd Kenyon, 1st Baron Kenyon | British Baron | 1732–1802 |
| Sherrilyn Kenyon | Novelist | 1965 |
| Marwan Kenzari | Dutch Tunesian actor | 1983 |
| Dave Keon | Canadian ice hockey player | 1940 |
| Teimumu Kepa | Fijian politician | 1945 |
| Johannes Kepler | German mathematician, astrono… | 1571–1630 |
| Li Keqiang | Premier of the People's Repub… | 1955–2023 |
| Maylis de Kerangal | French writer | 1967 |
| Etgar Keret | Israeli and polish writer and… | 1967 |
| Bernard Kerik | American police chief | 1955 |
| Kerli | Estonian singer | 1987 |
| Ken Kern | American writer | |
| Lee Kernaghan | Australian country music sing… | 1964 |
| Brian W. Kernighan | Canadian computer scientist | 1942 |
| Jack Kerouac | American writer | 1922–1969 |
| Clark Kerr | American academic | 1911–2003 |
| Jean Kerr | Irish-American author and pla… | 1922–2003 |
| Katharine Kerr | American writer | 1944 |
| John F. Kerry | politician from the United St… | 1943 |
| Teresa Heinz Kerry | Portuguese–American businessw… | 1938 |
| Ian Kershaw | British historian | 1943 |
| Imre Kertész | Hungarian writer | 1929–2016 |
| Larkin Kerwin | Canadian physicist | 1924–2004 |
| Harold Kerzner | American engineer, management… | 1940 |
| Sol Kerzner | South African businessman | 1935 |
| Ken Kesey | novelist | 1935–2001 |
| Kesha | American singer, songwriter, … | 1987 |
| Albert Kesselring | German Luftwaffe Generalfeldm… | 1885–1960 |
| Joseph Kesselring | American writer and playwright | 1902–1967 |
| Andy Kessler | American writer | 1958 |
| Liz Kessler | British children's writer | 1966 |
| Ronald Kessler | American journalist | 1943 |
| Jack Ketchum | American horror writer | 1946–2018 |
| Raymond Kethledge | a United States Circuit Judge… | 1966 |
| Charles Kettering | American inventor, engineer, … | 1876–1958 |
| Black Kettle | Leader of the Southern Cheyen… | 1803–1868 |
| Thomas Kettle | Irish politician | 1880–1916 |
| Jack Kevorkian | American pathologist, euthana… | 1928–2011 |
| Francis Scott Key | American lawyer and poet | 1779–1843 |
| Alan Keyes | American politician | 1950 |
| Daniel Keyes | American author | 1927–2014 |
| Marian Keyes | Irish writer | 1963 |
| John Maynard Keynes | British economist | 1883–1946 |
| Alicia Keys | American singer-songwriter, p… | 1981 |
| Cassius Jackson Keyser | American mathematician and jo… | 1862–1947 |
| Hermann von Keyserling | German philosopher | 1880–1946 |
| Samir Khader | Iraqi journalist | |
| Paras Khadka | Nepalese Cricket team captain | 1987 |
| Yasmina Khadra | Algerian writer | 1955 |
| Khakheperraseneb | Egyptian scribe | |
| Porochista Khakpour | American writer | 1978 |
| Ibn Khaldun | Arab historiographer and hist… | 1332–1406 |
| Khalid bin Ahmed Al Khalifa | Bahraini politician | 1960 |
| Mia Khalifa | American social media persona… | 1993 |
| Wiz Khalifa | American rapper and actor | 1987 |
| Nasser Khalili | British-Iranian scholar, coll… | 1945 |
| Alauddin Khalji | Ruler of the Khalji dynasty | 1266–1316 |
| Muhammad bin Bakhtiyar Khalji | Turkic military general of Qu… | |
| Chulpan Khamatova | Russian actress | 1975 |
| Ali Khamenei | Iranian Shiite faqih, Marja' … | 1939 |
| Aamir Khan | Indian film actor, director, … | 1965 |
| Begum Aga Khan | German philanthropist | 1963 |
| Bismillah Khan | Indian musician | 1916–2006 |
| Genghis Khan | founder and first emperor of … | 1162–1227 |
| Ghani Khan | Pakistani poet | 1914–1996 |
| Hafiz Khan | Fijian politician | |
| Hazrat Inayat Khan | Indian Sufi | 1882–1927 |
| Imran Khan | Prime Minister of Pakistan | 1952 |
| Khan Abdul Ghaffar Khan | Indian independence activist | 1890–1988 |
| Liaquat Ali Khan | Pakistan Movement Leader and … | 1895–1951 |
| Muhammad Zafrulla Khan | Pakistani diplomat | 1893–1985 |
| Rozlyn Khan | actor and model | 1988 |
| Salman Khan | Indian film actor | 1965 |
| Shahrukh Khan | Indian actor, producer and te… | 1965 |
| Syed Ahmed Khan | Indian educator and politician | 1820–1898 |
| Wahiduddin Khan | Islamic Scholar | 1925 |
