Hidenari Ugaki (宇垣秀成, Ugaki Hidenari, born July 25, 1963; 57 years old) is a Japanese voice actor from Tōkyō. He is currently attached to 81 Produce. He is best known for his roles in Mobile Fighter G Gundam (as Argo Gulskii), the TV Tokyo edition of Teenage Mutant Ninja Turtles (1987 TV series) and Mutant Turtles: Chōjin Densetsu Hen (as Donatello) and the 2005 Doraemon series (as Kannari-san).

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