Mitsuaki Iwagō (岩合 光昭 Iwagō Mitsuaki, born November 27, 1950 in Tokyo) is a prominent Japanese wildlife photographer and filmmaker.
He is the son of Tokumitsu Iwagō, himself a noted wildlife photographer. After graduating from Hosei University, Iwago went as his father's assistant to the Galápagos Islands, where he decided to become a photographer. His work Letters from the Sea (海からの手紙, Umi kara no tegami) won the Kimura Ihei Award in 1979. He is also the first Japanese photographer whose work has twice appeared on the cover of National Geographic (May 1986 and December 1994). He is now a spokesman for Olympus Corporation.