Léon Bertin (8 April 1896, Paris – 5 February 1956, Saint-Amand-de-Vendôme) was a French zoologist.
He was born in the 14th arrondissement of Paris, and died in the Loir-et-Cher Department of France, in a car accident.
In 1925, he received his doctorate with a thesis entitled French: Recherches bionomiques, biométriques et systématiques sur les épinoches (Gastérostéidés) ("Bionomic, biometric and systematic research on sticklebacks (Gasterosteidae)".
Bertin is most remembered as the author of the 1921 work L’Atlas des poissons marins, Regards sur la nature et ses mystères, La systématique et la biologie des épinoches ("Atlas of Marine Fish, Detailing their Habits and Mysteries, The Life Cycle and Biology of Sticklebacks").
Other works include: The thread eel Serrivomer bertini is named after him.