Masaharu Satō (佐藤 正治, Satō Masaharu?, born July 1, 1946 in Tokyo) is a Japanese voice actor currently working for Aoni Production.
Along with the late Kōji Totani, he is considered the No. 1 supporting actor of the Japanese voice acting world.
Satō is most known for the roles of Buffaloman, Sunshine (Kinnikuman), Miyamoto Musashi (Yaiba), Adah (Mushiking: King of the Beetles), and Dora-med III (The Doraemons). He is also known for playing numerous roles in the Kinnikuman, Dr. Slump and Arale-chan, Fist of the North Star, and Dragon Ball series.
Satō also made a voice guest in episode 3 of GoGo Sentai Boukenger and Juken Sentai Gekiranger as a rare moment.