Encyclopedias, Almanacs, Transcripts, and Maps
- Lennart Axel Edvard Carleson
- Lennox-Gastaut Syndrome
- Lenore Blum
- Leo Esaki
- Leo, Alan (1860-1917)
- Leon Alexandre Guillet
- Léon Charles Albert Calmette
- Léon Walras
- Leonard Digges
- Leonard Eugene Dickson
- Leonard M. Adleman
- Leonard, Gladys Osborne (1882-1968)
- Leonardo Pisano Fibonacci
- Leonardo Torres y Quevedo
- Leone Battista Alberti
- Leonhard Euler
- Leonhard Fuchs
- Leonhard Thurneysser
- Leopold Auenbrugger
- Leopold Kronecker