| Cara Lockwood | American writer | 1973 |
| David Lodge | writer | 1935 |
| Henry Cabot Lodge | American statesman | 1850–1924 |
| Oliver Lodge | British physicist | 1851–1940 |
| Thomas Lodge | English dramatist and writer | 1558–1625 |
| Amit Lodha | Indian author and police offi… | 1974 |
| Maleeha Lodhi | Pakistani diplomat | 1953 |
| Jeph Loeb | writer | 1958 |
| John Loeffler | Anime composer | 1951 |
| Dana Loesch | American conservative politic… | 1978 |
| Frank Loesser | American songwriter | 1910–1969 |
| James W. Loewen | American historian | 1942 |
| Raymond Loewy | industrial designer | 1893–1986 |
| Hugh Lofting | British author, trained as a … | 1886–1947 |
| Norah Lofts | British writer | 1904–1983 |
| Elizabeth Loftus | American cognitive psychologi… | 1944 |
| Dave Logan | | 1954 |
| Jared Logan | | |
| John Logan | Scottish minister and histori… | 1748–1788 |
| Friedrich von Logau | German poet | 1605–1655 |
| William Drummond of Logiealmond | Scottish diplomat and Member … | 1770–1828 |
| Christopher Logue | Poet, screenwriter, actor | 1926–2011 |
| Lindsay Lohan | American actress and pop sing… | 1986 |
| Alison Lohman | American actress | 1979 |
| Fred von Lohmann | American lawyer | |
| George Lois | American art director, design… | 1931 |
| Augusto Paolo Lojudice | Italian Catholic Archbishop | 1964 |
| Kristanna Loken | American actress | 1979 |
| Andrew Lokenauth | Personal finance expert, writ… | 1987 |
| Jean-Louis de Lolme | Genevan and English political… | 1740–1806 |
| Herbert Lom | Czech-born film and televisio… | 1917–2012 |
| Martin Lomasney | American politician | 1859–1933 |
| Carole Lombard | American actress | 1908–1942 |
| Vince Lombardi | American football player, coa… | 1913–1970 |
| Stanley Lombardo | Philosopher, Classicist | 1943 |
| Cesare Lombroso | Italian criminologist | 1835–1909 |
| Fritz London | American physicist | 1900–1954 |
| Jack London | American author, journalist, … | 1876–1916 |
| Jay London | American comedian | 1966 |
| Stacy London | television host and author fr… | 1969 |
| Yaron London | Israeli journalist, actor and… | 1940 |
| Barry Long | Australian spiritual teacher … | 1926–2003 |
| Earl Long | American politician and the 4… | 1895–1960 |
| George Long | English classical scholar | 1800–1879 |
| Huey Long | American politician, Governor… | 1893–1935 |
| Richard Long | artist | 1945 |
| Roderick Long | American philosopher | 1964 |
| Shelley Long | actress | 1949 |
| Henry Wadsworth Longfellow | American poet | 1807–1882 |
| Samuel Longfellow | American clergyman | 1819–1892 |
| Michael Longley | poet | 1939 |
| Eva Longoria | American actress | 1975 |
| James Longstreet | Confederate Army general | 1821–1904 |
| Alice Roosevelt Longworth | American writer and prominent… | 1884–1980 |
| Hendrik Willem van Loon | Dutch-American historian, jou… | 1882–1944 |
| Lee Hsien Loong | Prime Minister of Singapore | 1952 |
| Adolf Loos | Austrian/Czech architect | 1870–1933 |
| Anita Loos | Actress, novelist, screenwrit… | 1889–1981 |
| José Leite Lopes | Brazilian physicist | 1918–2006 |
| Steven J. Lopes | American Roman Catholic prela… | 1975 |
| Barry Lopez | American writer | 1945 |
| Jennifer Lopez | American singer and actress | 1969 |
| Josefina Lopez | American playwright | 1969 |
| Rogelio Cabrera López | Roman Catholic archbishop | 1951 |
| Federico García Lorca | Spanish poet, dramatist and t… | 1898–1936 |
| Cynthia Lord | American children's writer | 1950 |
| Karen Lord | Barbadian novelist and sociol… | 1968 |
| William Paine Lord | American politician | 1838–1911 |
| Lorde | New Zealand singer-songwriter | 1996 |
| Audre Lorde | writer and activist | 1934–1992 |
| Traci Lords | American mainstream and porno… | 1968 |
| Nicholas Lore | American social scientist | 1944 |
| Sophia Loren | Italian actress | 1934 |
| Hendrik Lorentz | Dutch physicist | 1853–1928 |
| Edward Norton Lorenz | American mathematician and me… | 1917–2008 |
| Konrad Lorenz | Austrian zoologist, winner of… | 1903–1989 |
| Giovanni Battista Lorenzi | | |
| George C. Lorimer | American minister | 1838–1904 |
| Philibert de l'Orme | French architect of the Renai… | 1514–1570 |
| Chuck Lorre | American screenwriter | 1952 |
| Peter Lorre | Austrian actor | 1904–1964 |
| Jay W. Lorsch | American organizational theor… | 1932 |
| Pierre Loti | French writer | 1850–1923 |
| Trent Lott | United States Senator from Mi… | 1941 |
| Trevor Loudon | New Zealand politician | |
| Peter Lougheed | Canadian politician | 1928–2012 |
| Jared Lee Loughner | Charged with 2011 Tucson shoo… | 1988 |
| Édouard Louis | French writer | 1992 |
| Joe Louis | American boxer | 1914–1981 |
| Pierre Charles Alexandre Louis | French physician | 1787–1872 |
| Julia Louis-Dreyfus | American actress, comedian an… | 1961 |
| Andrew Louth | | 1944 |
| Richard Louv | American journalist | 1949 |
| Toussaint Louverture | Leader of the Haitian Revolut… | 1743–1803 |
| Michael J. Loux | | 1942 |
| Demi Lovato | American singer, songwriter, … | 1992 |
| Bessie Love | American actress (1898–1986) | 1898–1986 |
| Courtney Love | American punk singer-songwrit… | 1964 |
| Mia Love | American politician | 1975 |
| H.P. Lovecraft | American author | 1890–1937 |
