| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Martti Sakari•Järventaus | |
| Used name | Martti•Järventaus | |
| Nick/petnames | Mara | |
| Born | 16 December 1960 in Kotka, Kymenlaakso |  FIN |
| Measurements | 184 cm / 70-72 kg | |
| Affiliations | Lappeenrannan Uimarit — Lappeenranta, Etelä-Karjala | FIN |
| NOC | Finland | FIN |
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1980 Summer Olympics | Swimming (Aquatics) | FIN |
Martti Järventaus | |||
| 100 metres Breaststroke, Men (Olympic) | 18 | |||||
| 200 metres Breaststroke, Men (Olympic) | 16 | |||||
| 1984 Summer Olympics | Swimming (Aquatics) | FIN |
Martti Järventaus | |||
| 100 metres Breaststroke, Men (Olympic) | 29 | |||||
| 200 metres Breaststroke, Men (Olympic) | 27 |
