| Author Name | Profession | Nationality |
| L. Frank Baum | Author | American |
| L. Sprague De Camp | Author | American |
| L. Wolfe Gilbert | Musician | Russian |
| Lactantius | Author | |
| Lady Bird Johnson | First Lady | American |
| Lady Gaga | Musician | American |
| Laetitia Casta | Model | French |
| Lamar Alexander | Politician | American |
| Lance Bass | Musician | American |
| Lance Ito | Judge | American |
| Lane Evans | Politician | American |
| Lara St. John | Musician | Canadian |
| Larry David | Actor | American |
| Larry Elder | Journalist | American |
| Larry Ellison | Businessman | American |
| Larry Flynt | Publisher | American |
| Larry Gelbart | Writer | American |
| Larry Hagman | Actor | American |
| Larry Harvey | Celebrity | American |
| Larry King | Entertainer | American |
| Lascelles Abercrombie | Poet | British |
| Lasse Hallstrom | Director | Swedish |
| Latoya Jackson | Musician | American |
| Laura Carmichael | Actress | British |
| Laura Dern | Actress | American |
| Laura Ingraham | Celebrity | American |
| Laura Innes | Actress | American |
| Laura Kightlinger | Comedian | American |
| Laura San Giacomo | Actress | American |
| Laurel Lee | ||
| Laurell K. Hamilton | Writer | American |
| Lauren Alaina | Musician | American |
| Lauren Ambrose | Actress | American |
| Lauren Bacall | Actress | American |
| Laurence Fishburne | Actor | American |
| Laurence Harvey | Actor | Lithuanian |
| Laurent Fabius | Statesman | French |
| Laurent Jalabert | Athlete | French |
| Laurent Lamothe | Public Servant | Haitian |
| Laurie Lee | Poet | English |
| Laurieann Gibson | Director | Canadian |
| Lawrence Barrett | Actor | American |
| Lawrence Eagleburger | Diplomat | American |
| Lawrence Ferlinghetti | Poet | American |
| Lawrence Halprin | Architect | American |
| Lawrence Hargrave | Scientist | Australian |
| Lawrence Jackson | Athlete | American |
| Lawrence Kasdan | Producer | American |
| Lea Delaria | Comedian | American |
| Learned Hand | Judge | American |
| Lebron James | Athlete | American |
| Lee Dewyze | Musician | American |
| Lee H. Hamilton | Politician | American |
| Lee Haney | Athlete | American |
| Lee Iacocca | Businessman | American |
| Leeza Gibbons | Celebrity | American |
| Leif Garrett | Musician | American |
| Leila Josefowicz | Musician | Canadian |
| Len Cariou | Actor | Canadian |
| Len Dawson | Athlete | American |
| Len Deighton | Historian | British |
| Leo Aikman | ||
| Leo Baekeland | Inventor | Belgian |
| Leo Delibes | Composer | French |
| Leo Fender | Businessman | American |
| Leon Battista Alberti | Architect | Italian |
| Leon Edel | Critic | American |
| Leon Gambetta | Politician | French |
| Leon Jaworski | Public Servant | American |
| Leon Jouhaux | Leader | French |
| Leon Kass | Educator | American |
| Leonard Bacon | Clergyman | American |
| Leonard Bailey | Inventor | American |
| Leonard Baskin | Artist | American |
| Leonardo Davinci | Artist | Italian |
| Leonhard Euler | Mathematician | Swiss |
| Leonora Carrington | Artist | British |
| Les Baxter | Musician | American |
| Les Dawson | Comedian | English |
| Lesley Garrett | Musician | English |
| Leslie Banks | Actor | British |
| Leslie Caron | Actress | French |
| Leslie Easterbrook | Actress | American |
| Leslie Fiedler | Critic | American |
| Leslie Jamison | Novelist | American |
| Lester Bangs | Critic | American |
| Letitia Elizabeth Landon | Poet | English |
| Levi Eshkol | Statesman | Israeli |
| Lewis Carroll | Author | English |
| Lewis Cass | Soldier | American |
| Lewis Gilbert | Director | British |
| Lewis H. Lapham | Editor | American |
| Lewis Hallam | Actor | |
| Lewis J. Bates | ||
| Li Keqiang | Politician | Chinese |
| Liam Gallagher | Musician | British |
| Lianne La Havas | Musician | English |
| Liberty Hyde Bailey | Scientist | American |
| Lil' Kim | Musician | American |
| Lillian Gish | Entertainer | American |
| Lillian Gordy Carter | Celebrity | American |
| Lillie Langtry | Actress | British |
| Lilly Ledbetter | Activist | American |
| Lily Aldridge | Model | American |
| Lily James | Actress | English |
| Lincoln Davis | Politician | American |
| Lincoln Ellsworth | Explorer | American |
| Linda Cardellini | Actress | American |
| Linda Ellerbee | Journalist | American |
| Linda Evangelista | Model | Canadian |
| Linda Evans | Actress | American |
| Linda Fiorentino | Actress | American |
| Linda Hamilton | Actress | American |
| Linda Lavin | Actress | American |
| Lindsay Davenport | Athlete | American |
| Lindsay Ellingson | Model | American |
| Linwood Barclay | Author | Canadian |
| Lion Feuchtwanger | Novelist | German |
| Lionel Barrymore | Actor | American |
| Lionel Hampton | Musician | American |
| Lionel Jospin | Statesman | French |
| Lisa Gardner | Author | American |
| Lisa Nicole Carson | Actress | American |
| Lita Ford | Musician | American |
| Liz Carpenter | Writer | American |
| Lizzy Caplan | Actress | American |
| Ll Cool J | Musician | American |
| Lloyd Alexander | Writer | American |
| Lloyd Banks | Musician | American |
| Lloyd Kaufman | Director | American |
| Logan Marshall Green | Actor | American |
| Lois Capps | Politician | American |
| Lonnie Earl Johnson | Criminal | American |
| Lord Acton | Historian | British |
| Lord Amherst | Soldier | British |
| Lord Caradon | Diplomat | British |
| Lord Edward Cecil | Soldier | British |
| Lord Hailsham | Politician | British |
| Lord Halifax | Politician | British |
| Lord Harlech | Politician | British |
| Lord Jeffrey | ||
| Lord Kelvin | Scientist | Irish |
| Lord Patrick Devlin | Lawyer | British |
| Lord Thomson Of Fleet | Publisher | Canadian |
| Loren Eiseley | Scientist | American |
| Lorenz Hart | ||
| Lorenzo Di Bonaventura | Producer | American |
| Loretta Devine | Actress | American |
| Lorin Maazel | Musician | American |
| Lorraine Hansberry | Playwright | American |
| Lorrie Fair | Athlete | American |
| Lotte Lehmann | Musician | German |
| Lou Barletta | Politician | American |
| Lou Ferrigno | Actor | American |
| Lou Gehrig | Athlete | American |
| Lou Gerstner | Businessman | American |
| Lou Harrison | Composer | American |
| Louis A. Johnson | Public Servant | American |
| Louis Agassiz | Scientist | Swiss |
| Louis Althusser | Philosopher | Algerian |
| Louis Farrakhan | Activist | American |
| Louis Ferdinand Celine | Writer | French |
| Louis Finkelstein | Clergyman | American |
| Louis Gerstner | Businessman | American |
| Louis Jacques Mande Daguerre | Artist | French |
| Louis Jordan | Musician | American |
| Louis Kahn | Architect | American |
| Louis L'amour | Author | American |
| Louis Leakey | Scientist | British |
| Louisa May Alcott | Novelist | American |
| Louise Erdrich | Writer | American |
| Louise Fletcher | Actress | American |
| Louise Hart | ||
| Louise J. Kaplan | ||
| Louise Jameson | Actress | British |
| Luc Dardenne | Director | Belgian |
| Luc Ferrari | Composer | French |
| Luciano De Crescenzo | Writer | Italian |
| Lucille Ball | Comedian | American |
| Lucille Roybal Allard | ||
| Lucius Accius | Poet | Italian |
| Lucy Alibar | Writer | American |
| Lucy Hale | Actress | American |
| Lucy Larcom | Poet | American |
| Lucy Lawless | Actress | New Zealander |
| Ludovic Halevy | Author | French |
| Ludwig Erhard | Politician | German |
| Luigi Barzini | Journalist | Italian |
| Luis Barragan | Architect | Mexican |
| Luis Figo | Athlete | Portuguese |
| Lukas Haas | Actor | American |
| Luke Evans | Actor | Welsh |
| Luke Ford | Writer | Australian |
| Luther Allison | Musician | American |
| Luther Campbell | Musician | American |
| Lyle Alzado | Athlete | American |
| Lyman Abbott | Author | American |
| Lynda Barry | Cartoonist | American |
| Lynda Carter | Actress | American |
| Lyndon B. Johnson | President | American |
| Lyndsy Fonseca | Actress | American |
| Lynn Abbey | Author | American |
| Lynn Barber | Journalist | British |
| Lynn Davies | Athlete | British |
| Lynn Fontanne | Actress | American |
| Lynn Johnston | Cartoonist | American |
| Lynn Lavner | Comedian | American |
| Lynndie England | Criminal | American |
