| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | Katsuya•Toyama |
| Used name | Katsuya•Toyama |
| Original name | 當山•克也 |
| Born | 21 July 1967 in ?, Okinawa (JPN) |
| Measurements | 175 cm / 72 kg |
| NOC |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1988 Summer Olympics | Canoe Sprint (Canoeing) | Katsuya Toyama | ||||
| Canoe Doubles (C2), 1,000 metres, Men (Olympic) | Toshisuke Sakamoto | 5 h1 r3/4 | ||||
| 1992 Summer Olympics | Canoe Sprint (Canoeing) | Katsuya Toyama | ||||
| Canoe Doubles (C2), 500 metres, Men (Olympic) | Tsunehisa Uchino | 6 h1 r2/3 | ||||
| Canoe Doubles (C2), 1,000 metres, Men (Olympic) | Tsunehisa Uchino | 5 h1 r2/3 |