| Intro | Weightlifter |
| Is |
Athlete Weightlifter |
| From | Japan |
| Type | Sports |
| Gender | male |
| Birth | 21 November 1949 |
| Age: | 70 years |
Kazumasa Hirai (平井 一正, Hirai Kazumasa) (born November 21, 1949) is a Japanese weightlifter and Olympic medalist. He won a bronze medal at the 1976 Summer Olympics in Montreal.