| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Male | |
| Full name | Aimo Jaakko Uolevi•Tuominen | |
| Used name | Jaakko•Tuominen | |
| Nick/petnames | Jaska | |
| Born | 4 May 1944 in Orimattila, Päijät-Häme |  FIN |
| Died | 27 October 2001 (aged 57 years 5 months 23 days) in Astoria, Oregon |  USA |
| Measurements | 186 cm / 78-80 kg | |
| Affiliations | HKV — Helsinki, Uusimaa | FIN |
| NOC | Finland | FIN |
Personal Best: 400H – 50.4 (1964).
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1964 Summer Olympics | Athletics | FIN |
Jaakko Tuominen | |||
| 400 metres Hurdles, Men (Olympic) | 8 h1 r2/3 | |||||
| 1968 Summer Olympics | Athletics | FIN |
Jaakko Tuominen | |||
| 400 metres Hurdles, Men (Olympic) | 6 h1 r2/3 |
