Hiroo Ōtsuka (大塚 博夫, Ōtsuka Hiroo; 26 July 1934 – 8 February 2021), known by the stage name Shūichirō Moriyama (森山 周一郎, Moriyama Shūichirō), was a Japanese actor and voice actor. He was the official Japanese dub-over artist of actors Telly Savalas (with whom he met several times), Jean Gabin, Spencer Tracy, and Lino Ventura.

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