Encyclopedias, Almanacs, Transcripts, and Maps
- Leafhoppers
- Leanan Sidhe
- Least Common Denominator
- Least Common Denominator
- Leatherback Seaturtle: Dermochelyidae
- Leber congenital amaurosis
- Leber Congenital Amaurosis
- Lebers Hereditary Optic Atrophy
- Lebesgue's Development of the Theories of Measure and Integration
- Lebrun, Pierre (1661-1729)
- Lecour, Paul (1871-1954)
- LeCron, Leslie M. (1892-1972)
- Lectorium Rosicrucianum
- LED
- LED
- LED (Light-Emitting Diode)
- Lee Penny
- Lee Silverman Voice Treatment
- Lee, Dal (1895-1973)
- Lee, Gloria (1926-1962)