Masushi Ōuchi (大内 仁, Ōuchi Masushi[1][2], September 28, 1943 – June 6, 2011) was a Japanese weightlifter who won a bronze medal at the 1964 Summer Olympics and a silver medal at the 1968 Summer Olympics.

[3] Later in life, Ouchi won four world titles in the masters category.

He took weightlifting as a student at Hosei University and an employee for the Tokyo Metropolitan Police Department.

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