| Mart Laar | Estonian politician and histo… | 1960 |
| Yahia Lababidi | | 1973 |
| Louise Labé | female French poet of the Ren… | 1524–1566 |
| Patti LaBelle | American singer-songwriter an… | 1944 |
| Labīd | Sahabah and poet | 560–661 |
| Henri Laborit | French physician, writer and … | 1914–1995 |
| Neil LaBute | Film director, playwright, sc… | 1963 |
| Carlos Lacámara | American actor | 1958 |
| Jacques Lacan | French psychoanalyst and psyc… | 1901–1981 |
| Milan Lach | Slovak Jesuit and Greek Catho… | 1973 |
| David Lack | British ornithologist and bio… | 1910–1973 |
| Mercedes Lackey | American novelist and short s… | 1950 |
| Pierre Choderlos de Laclos | French novelist, official and… | 1741–1803 |
| Lactantius | Early Christian author | 250–325 |
| George Trumbull Ladd | American psychologist, educat… | 1842–1921 |
| Peter Ladefoged | British phonetician | 1925–2006 |
| Osama bin Laden | founder of al-Qaeda | 1957–2011 |
| Daniel Ladinsky | American poet | 1948 |
| Cathy Ladman | American actor and comedian | 1955 |
| Winona LaDuke | author and activist | 1959 |
| Robert Seldon Lady | CIA agent | 1954 |
| Diogenes Laërtius | biographer of ancient Greek p… | 180–240 |
| Paul Lafargue | French politician | 1842–1911 |
| Gilbert du Motier, Marquis de Lafayette | French general and politician | 1757–1834 |
| Dany Laferrière | Haitian Canadian novelist and… | 1953 |
| Arthur Laffer | American economist | 1940 |
| R. A. Lafferty | American writer | 1914–2002 |
| Guy Lafleur | Canadian ice hockey player | 1951 |
| Bonnie-Jill Laflin | American actor, model | 1976 |
| Emmanuel Marie Philippe Louis Lafont | Catholic bishop | 1945 |
| Jean De La Fontaine | French poet, fabulist and wri… | 1621–1695 |
| Paul de Lagarde | German polymath, biblical sch… | 1827–1891 |
| Juan Lagares | baseball player | 1989 |
| Karl Lagerfeld | German fashion designer | 1933–2019 |
| Selma Lagerlöf | Swedish female writer | 1858–1940 |
| Cristhiam Lagos | | |
| Joseph Louis Lagrange | Italian mathematician and ma… | 1736–1813 |
| Stephenie LaGrossa | American television personali… | 1978 |
| Bernadette Lahai | Sierra Leonean politician | 1960 |
| Jhumpa Lahiri | Short story writer, novelist | 1967 |
| Tomi Lahren | American television and onlin… | 1992 |
| Jimmy Lai | Hong Kong businessman | 1948 |
| Michael Lai | Taiwanese virologist (born 19… | 1942 |
| Thanhha Lai | American children's writer | 1965 |
| William Lai | Taiwanese politician | 1959 |
| David Laidler | Canadian economist | 1938 |
| Bill Laimbeer | American basketball player | 1957 |
| Ronald David Laing | Scottish psychiatrist and aut… | 1927–1989 |
| Imre Lakatos | Hungarian mathematician, phil… | 1921–1974 |
| Alan Lakein | American writer | 1973 |
| George Lakoff | American linguist | 1941 |
| Padma Lakshmi | Indian-born American author, … | 1970 |
| B. B. Lal | Indian archaeologist | 1921 |
| K. S. Lal | Indian historian | 1920–2002 |
| Naiqama Lalabalavu | Fijian politician | 1953 |
| Laila Lalami | American writer | 1968 |
| Jack LaLanne | American exercise instructor | 1914–2011 |
| Lalleshwari | Indian writer, mystic and sai… | 1320–1392 |
| Carrie Lam | Chief Executive of Hong Kong | 1957 |
| Wifredo Lam | Cuban artist | 1902–1982 |
| Tsangyang Gyatso, 6th Dalai Lama | sixth Dalai Lama of Tibet | 1683–1706 |
| Kendrick Lamar | American rapper, songwriter a… | 1987 |
| Jean-Baptiste Lamarck | French naturalist | 1744–1829 |
| Hedy Lamarr | Austrian-American actress and… | 1914–2000 |
| Mark Lamarr | British DJ | 1967 |
| Judy LaMarsh | Canadian politician, writer, … | 1924–1980 |
| Alphonse de Lamartine | French writer, poet, and poli… | 1790–1869 |
| Charles Lamb | English essayist | 1775–1834 |
| George Lamb | | |
| Karen Lamb | British tennis player | 1982 |
| Wally Lamb | american novelist | 1950 |
| Willis Lamb | American Physicist | 1913–2008 |
| Auguste, Baron Lambermont | Belgian politician | 1819–1905 |
| Anne-Thérèse de Marguenat de Courcelles, marquise de Lambert | writer from France | 1647–1733 |
| Constant Lambert | British composer and conductor | 1905–1951 |
| Jack Lambert | American football player | 1952 |
| Johann Heinrich Lambert | German mathematician, physici… | 1728–1777 |
| Michelle Lambert | American singer-songwriter an… | 1985 |
| Ferruccio Lamborghini | Italian industrialist | 1916–1993 |
| Norman Lamm | American rabbi | 1927 |
| Norman Lamont | British politician | 1942 |
| Anne Lamott | Novelist, essayist, memoirist… | 1954 |
| Jake LaMotta | American boxer | 1922–2017 |
| Dorothy Lamour | American actress and singer | 1914–1996 |
| Louis L'Amour | Novelist, short story writer | 1908–1988 |
| Frank Lampard | English association football … | 1978 |
| Giuseppe Tomasi di Lampedusa | Sicilian writer and prince | 1896–1957 |
| Laurence Lampert | American academic | 1941 |
| Archibald Lampman | Canadian poet | 1861–1899 |
| Leslie Lamport | American computer scientist | 1941 |
| John Lanahan | | 1815–1903 |
| Burt Lancaster | American actor and producer | 1913–1994 |
| Jen Lancaster | American writer | 1967 |
| Frederick W. Lanchester | British polymath | 1868–1946 |
| John Lanchester | British writer | 1962 |
| Edwin H. Land | American scientist and invent… | 1909–1991 |
| Nick Land | British philosopher | 1962 |
| Edmund Landau | German Jewish mathematician | 1877–1938 |
| Lev Landau | Soviet physicist | 1908–1968 |
| Martin Landau | American actor and acting coa… | 1928–2017 |
