Merlin Devere Tuttle, (born August 26, 1941) is an American ecologist, conservationist, and wildlife photographer who has specialized in bat ecology, behavior, and conservation.
He is currently active as founder and executive director of Merlin Tuttle's Bat Conservation (MTBC).
Tuttle is known for founding the conservation organizations MTBC and Bat Conservation International (BCI), and his research on gray bat population ecology migration, and frog-eating bats, He is also recognized for his photography of bats.