- Louis Aragon
- Louis Armstrong
- Louis Armstrong *
- Louis Binstock
- Louis Brandeis
- Louis Dearborn L'Amour
- Louis Dudek
- Louis Kronenberger
- Louis L’Amour
- Louis Mann
- Louis Nizer
- Louis Pasteur
- Louis Untermeyer
- Louis XIV
- Louisa May Alcott
- Louise Beal
- Louise Fitzhugh
- Louise Glück
- Louise Hay
- Louise Nevelson
- Lowell Thomas
- Luc de Clapiers
- Luc de Clapiers, marquis de Vauvenargues
- Lucan
- Lucille Ball
- Lucretia Mott
- Lucretius
- Lucy Larcom
- Lucy Maud Montgomery
- Ludwig Börne
- Ludwig Jacobowski
- Ludwig van Beethoven
- Ludwig Wittgenstein
- Luigi Pirandello
- Lydia Maria Child
- Lyle Alzado
- Lyman Beecher
- Lynda Barry
- Lyndon B. Johnson
- Lynn Johnston
- Lytton Strachey