| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Katsuji•Watanabe | |
| Used name | Katsuji•Watanabe | |
| Original name | 渡辺•勝治 | |
| Born | 11 March 1940 in Fukushima, Fukushima |  JPN |
| Died | 7 February 2021 (aged 80 years 10 months 27 days) | |
| Measurements | 170 cm / 63 kg | |
| NOC | Japan | JPN |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1960 Summer Olympics | Boxing | JPN |
Katsuji Watanabe | |||
| Light-Welterweight, Men (Olympic) | =17 |
