| Daniel Levitin | American psychologist | 1957 |
| Egils Levits | Latvian judge, jurist and pol… | 1955 |
| Steven D. Levitt | American economist | 1967 |
| Theodore Levitt | American economist and profes… | 1925–2006 |
| Vasil Levski | Bulgarian revolutionary | 1837–1873 |
| Andrea Levy | British writer | 1956–2019 |
| David H. Levy | Canadian astronomer | 1948 |
| Deborah Levy | British writer | 1959 |
| Gideon Levy | Israeli journalist | 1953 |
| Marc Levy | French writer | 1961 |
| Oscar Levy | German physician and writer | 1867–1946 |
| Bernard-Henri Lévy | French film director and phil… | 1948 |
| Lucien Lévy-Bruhl | French philosopher | 1857–1939 |
| Robert Lewandowski | Polish association football p… | 1988 |
| Ted C. Lewellen | American writer | 1940–2006 |
| George Henry Lewes | British philosopher | 1817–1878 |
| Kurt Lewin | German-American psychologist | 1890–1947 |
| Roger Lewin | American writer | 1944 |
| Alun Lewis | Welsh poet | 1915–1944 |
| Anthony Lewis | American journalist | 1927–2013 |
| Bernard Lewis | British-American historian | 1916–2018 |
| Beverly Lewis | American writer | 1949 |
| Blake Lewis | American musician | 1981 |
| Carl Lewis | US track & field athlete | 1961 |
| Cecil Day Lewis | English poet | 1904–1972 |
| Clive Staples Lewis | Christian apologist, novelist… | 1898–1963 |
| Edmonia Lewis | American sculptor | 1844–1907 |
| Hilda Lewis | British writer | 1896–1974 |
| Jenny Lewis | American actor, singer-songwr… | 1976 |
| Jerry Lewis | American comedian, actor, fil… | 1926–2017 |
| Jerry Lee Lewis | American singer-songwriter an… | 1935 |
| Joe E. Lewis | American singer and comedian | 1902–1971 |
| John L. Lewis | American labor leader | 1880–1969 |
| Joseph Lewis | American activist | 1889–1968 |
| J. Patrick Lewis | American children's writer an… | 1942 |
| Lennox Lewis | British-Canadian boxer | 1965 |
| Leona Lewis | British singer-songwriter | 1985 |
| Meriwether Lewis | American explorer | 1774–1809 |
| Michael Lewis | American writer | 1960 |
| Norman Lewis | British travel writer | 1908–2003 |
| Roger Lewis | Welsh academic and biographer | 1960 |
| Sinclair Lewis | American novelist, short-stor… | 1885–1951 |
| W. Arthur Lewis | Saint Lucain economist | 1915–1991 |
| Wyndham Lewis | writer and painter | 1882–1957 |
| Sol LeWitt | American artist | 1928–2007 |
| Richard C. Lewontin | American evolutionary biologi… | 1929 |
| Robert Ley | Nazi politician | 1890–1945 |
| Arthur Li | Hong Kong politician | 1945 |
| Frederick Pei Li | American physician | 1940–2015 |
| Jet Li | Chinese martial artist and ac… | 1963 |
| Robin Li | billionaire businessman and e… | 1968 |
| Yang Li | Chinese stand-up comedian | 1992 |
| Yiyun Li | Chinese American writer | 1972 |
| Shneur Zalman of Liadi | Orthodox Rabbi, and the found… | 1745–1812 |
| Zhuge Liang | Shu Han chancellor, military … | 181–234 |
| Chen Liang-gee | politician | 1956 |
| Yan Lianke | Chinese novelist and satirist | 1958 |
| Jimmy John Liautaud | Jimmy John's Owner, Founder, … | 1964 |
| Scooter Libby | former lawyer and White House… | 1950 |
| Johannes Lichtenauer | Founder and grand master of t… | 1300–1389 |
| Georg Christoph Lichtenberg | German scientist, satirist | 1742–1799 |
| Roy Lichtenstein | American pop artist | 1923–1997 |
| Cheng Li-chun | Taiwanese politician | 1969 |
| J. C. R. Licklider | American psychologist and com… | 1915–1990 |
| Henry George Liddell | Headmaster, lexicographer, cl… | 1811–1898 |
| Henry Liddon | British theologian | 1829–1890 |
| G. Gordon Liddy | American lawyer in Watergate … | 1930 |
| Håkon Wium Lie | Norwegian software engineer | 1965 |
| Avigdor Lieberman | Israeli politician | 1958 |
| Joe Lieberman | politician from the United St… | 1942 |
| Justus von Liebig | German chemist | 1803–1873 |
| Wilhelm Liebknecht | German socialist politician | 1826–1900 |
| A. J. Liebling | American journalist | 1904–1963 |
| Wendy Liebman | American comedian | 1961 |
| Brian Lies | American writer | 1963 |
| Evgeny Lifshitz | Soviet physicist | 1915–1985 |
| György Ligeti | | |
| Phil Liggett | sports journalist, commentator | 1943 |
| Gordon Lightfoot | Canadian singer-songwriter | 1938 |
| Robert Lighthizer | US Trade Representative | 1947 |
| Alan Lightman | Physicist, science writer, es… | 1948 |
| Charles Lightoller | British sailor | 1874–1952 |
| Charles-Joseph, 7th Prince of Ligne | Prince of Ligne | 1735–1814 |
| Thomas Ligotti | American horror author | 1953 |
| Alphonsus Maria de' Liguori | Italian Catholic bishop, spir… | 1696–1787 |
| Rensis Likert | American statistician | 1903–1981 |
| Donald H. Liles | American engineer | 1947 |
| Otto Lilienthal | German aviation pioneer | 1848–1896 |
| Damian Lillard | American professional basketb… | 1990 |
| Patricia de Lille | Minister of Public Works and … | 1951 |
| John Lilly | American physician | 1915–2001 |
| Miss Shangay Lily | Spanish artivist and drag que… | 1963–2016 |
| Rebecca Lim | Singaporean actress | 1986 |
| Rose of Lima | Peruvian colonist and Dominic… | 1586–1617 |
| Sue Limb | British humorous writer | 1946 |
| Rush Limbaugh | U.S. radio talk show host, Co… | 1951 |
| Brigitte Lin | Taiwanese actress | 1954 |
| David Lin | Taiwanese politician | 1950 |
| Grace Lin | author and illustrator | 1974 |
| Abraham Lincoln | 16th President of the United … | 1809–1865 |
