Hiroshi Masuoka (?? ?, Masuoka Hiroshi, born August 7, 1936, in Saitama) is a Japanese voice actor.
He voiced the roles of Masuo Fuguta in Sazae-san and Jam Ojisan in Soreike! Anpanman.
He also voiced Kame-Sennin during the last episodes of Dragon Ball Z and all of Dragon Ball GT, following Kohei Miyauchi's death.
He worked for the Tokyo Actor's Consumer's Cooperative Society until his retirement in 2019.
On August 5, 2019, it was announced that Masuoka has retired and that his roles in Sazae-san and Soreike! Anpanman will be taken over by Hideyuki Tanaka and Koichi Yamadera.