L
- Jacques Labillardière
- Lars Levi Laestadius
- Jean-Baptiste Lamarck
- Aylmer Bourke Lambert
- Jean Vincent Félix Lamouroux
- Kai Larsen
- Charles de l'Écluse
- Jean Baptiste Leschenault de la Tour
- William Lobb
- Emmanuel Liais
- John Lindley
- Johann Heinrich Friedrich Link
- Carolus Linnaeus
- Carolus Linnaeus the Younger
- Pablo de la Llave
- Thomas Lobb
- William Lobb
- George Loddiges
- Harri Lorenzi
- John Claudius Loudon
- Alice Lounsberry
- Elias Lönnrot
Read more about this topic: List Of Botanists