Kazuhiro Nakaya (仲谷 一宏, Nakaya Kazuhiro, born July 27, 1945) is a Japanese marine scientist and ichthyologist.
He graduated from Hokkaido University with a BA in 1968 and with a PhD in 1972.
He specializes in taxonomy and evolution of sharks, rays, chimaeras, and Lake Tanganyikan fish.
He is the author of many articles and books on sharks and fish.
In 1995 he was put in charge of dissecting and preparing the 7th specimen of the very rare megamouth shark.