| Gustav Landauer | German anarchist | 1870–1919 |
| Ann Landers | American advice columnist | 1918–2002 |
| Kenesaw Mountain Landis | American judge and baseball c… | 1866–1944 |
| Letitia Elizabeth Landon | English poet and novelist | 1802–1838 |
| Margaret Landon | writer, missionary | 1903–1993 |
| Walter Savage Landor | British writer | 1775–1864 |
| Wanda Landowska | Polish-French classical harps… | 1879–1959 |
| Bernard Landry | Canadian politician | 1937–2018 |
| Jeff Landry | American politician, attorney… | 1970 |
| Tom Landry | Coach of the Dallas Cowboys | 1924–2000 |
| Steven E. Landsburg | | |
| Derek Landy | Irish children's writer | 1974 |
| Amy Lane | | |
| David C. Lane | American scholar | 1956 |
| Eddie Lane | | |
| Joseph Lane | | |
| Nathan Lane | American actor | 1956 |
| Rose Wilder Lane | American journalist | 1886–1968 |
| Sara Malakul Lane | Thai-American actress and mod… | 1983 |
| Shawn Lane | American musician | 1963–2003 |
| Stanley Lane-Poole | British orientalist | 1854–1931 |
| K.d. lang | Canadian singer-songwriter | 1961 |
| Andrew Lang | Scots poet, novelist and lite… | 1844–1912 |
| Jack Lang | | |
| Julia Lang | | |
| Lang Lang | Chinese pianist | 1982 |
| Serge Lang | mathematician | 1927–2005 |
| Henry Bickersteth, 1st Baron Langdale | British lawyer | 1783–1851 |
| Antoni Lange | Polish writer and philosopher | 1862–1929 |
| Artie Lange | Comedian, radio personality | 1967 |
| David Lange | New Zealand politician and 32… | 1942–2005 |
| Dorothea Lange | American photojournalist | 1895–1965 |
| Halvard Lange | Norwegian politician | 1902–1970 |
| Jessica Lange | American actress | 1949 |
| Joep Lange | dutch clinical researcher spe… | 1954–2014 |
| Mike Lange | Canadian sportscaster | 1948 |
| Oskar R. Lange | Polish economist | 1904–1965 |
| Friedrich Spee von Langenfeld | Jesuit, author of Cautio Crim… | 1591–1635 |
| Heather Langenkamp | actress | 1964 |
| Susanne K. Langer | American philosopher | 1895–1985 |
| William Langland | English writer | 1332–1386 |
| Robert Langlands | Canadian mathematician | 1936 |
| Noel Langley | South African writer | 1911–1980 |
| Irving Langmuir | American chemist and physicist | 1881–1957 |
| Christopher Langton | American computer scientist | 1949 |
| Jane Langton | Novelist, children's writer | 1922–2018 |
| Jaron Lanier | American computer scientist, … | 1960 |
| Sidney Lanier | American musician, poet | 1842–1881 |
| Andrei Lankov | Russian academic | 1963 |
| Joe R. Lansdale | American novelist, short stor… | 1951 |
| George Granville, 1st Baron Lansdowne | 1st Baron Lansdowne | 1666–1735 |
| Lori Lansens | Canadian writer | 1962 |
| Alfred Lansing | American journalist | 1921–1975 |
| Paul Lansky | American composer | 1944 |
| Tom Lantos | American politician | 1928–2008 |
| Xiang Lanxin | | 1956 |
| Aemilia Lanyer | English poet | 1569–1645 |
| Robert Lanza | American medical doctor | 1956 |
| Fabio Lanzoni | Italian model, actor and auth… | 1961 |
| Yiannis Laouris | Cypriot neuroscientist | 1958 |
| Zachary Laoutides | film actor | 1986 |
| Laozi | semi-legendary Chinese figure… | -604 |
| Lewis H. Lapham | American journalist | 1935 |
| Nicole Lapin | American journalist | 1984 |
| Pierre-Simon Laplace | French mathematician and astr… | 1749–1827 |
| Leo Laporte | American technology broadcast… | 1956 |
| Anna Lappé | American writer | 1973 |
| Frances Moore Lappé | activist against world hunger | 1944 |
| Georges Laraque | Canadian ice hockey player | 1976 |
| Justine Larbalestier | Australian young-adult fictio… | 1967 |
| Gérard Larcher | President of the Senate (Fran… | 1949 |
| Lucy Larcom | American teacher, poet, author | 1824–1893 |
| Dionysius Lardner | Irish science writer | 1793–1859 |
| Ring Lardner | Sportswriter, short story wri… | 1885–1933 |
| Storm Large | actor, singer | 1969 |
| Ali Larijani | Iranian philosopher, politici… | 1958 |
| Mohammad-Javad Larijani | Iranian politician | 1951 |
| Philip Larkin | English poet, novelist, jazz … | 1922–1985 |
| Joseph Larmor | Irish physicist and mathemati… | 1857–1942 |
| Hermann Laroche | | |
| Lyndon LaRouche | American political activist a… | 1922–2019 |
| John Larroquette | born 1947; American film, tel… | 1947 |
| Joan Larsen | United States Circuit Judge f… | 1968 |
| Kristine Larsen | American astronomer | 1963 |
| Nella Larsen | Novelist, librarian, nurse | 1891–1964 |
| Christian D. Larson | Prolific author of metaphysic… | 1874–1962 |
| Jonathan Larson | American composer and playwri… | 1960–1996 |
| Kirby Larson | American children's writer | 1950 |
| Henrik Larsson | | |
| Ali Larter | American actress | 1976 |
| Daniel Larze | Puerto Rican singer-songwrite… | 2005 |
| Christopher Lasch | American historian | 1932–1994 |
| Nicholas Lash | British theologian | 1934 |
| Emanuel Lasker | German World Chess Champion a… | 1868–1941 |
| Mary Lasker | American health activist and … | 1900–1994 |
| Harold J. Laski | British academic | 1893–1950 |
| Kathryn Lasky | American children's writer | 1944 |
| Peter Laslett | English historian | 1915–2001 |
| Kalle Lasn | Estonian-Canadian film maker,… | 1942 |
| Tommy Lasorda | American baseball player and … | 1927 |
