| Roles | Competed in Olympic Games |
|---|---|
| Sex | Male |
| Full name | József•Deme |
| Used name | József•Deme |
| Born | 11 December 1951 in Szolnok, Jász-Nagykun-Szolnok (HUN) |
| Measurements | 190 cm / 84 kg |
| Affiliations | Szolnoki Vízügy Sportegyesület |
| NOC | Hungary |
| Medals | OG |
| Gold | 0 |
| Silver | 1 |
| Bronze | 0 |
| Total | 1 |
József Deme had the following podium finishes at the Flatwater World Championships: 1st 1973 K2 1000 m (with János Rátkai), 1st 1973 K4 1000 m (with János Rátkai, Csongor Vargha, and Csaba Giczy), 2nd 1973 K2 500 m (with János Rátkai), 2nd 1974 K2 500 m (with János Rátkai), 3rd 1974 K4 1000 m (with Csaba Giczy, János Rátkai, and Csongor Vargha), 3rd 1975 K2 1000 m (with János Rátkai), 3rd 1975 K4 1000 m (with Zoltán Bakó, Géza Csapó, and János Rátkai).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1972 Summer Olympics | Canoe Sprint (Canoeing) | HUN |
József Deme | |||
| Kayak Doubles, 1,000 metres, Men (Olympic) | János Rátkai | 2 | Silver | |||
| 1976 Summer Olympics | Canoe Sprint (Canoeing) | HUN |
József Deme | |||
| Kayak Doubles, 500 metres, Men (Olympic) | János Rátkai | 5 | ||||
| Kayak Fours, 1,000 metres, Men (Olympic) | Hungary | 8 | ||||
| 1980 Summer Olympics | Canoe Sprint (Canoeing) | HUN |
József Deme | |||
| Kayak Fours, 1,000 metres, Men (Olympic) | Hungary | 5 |