| Roles | Competed in Olympic Games | |
|---|---|---|
| Sex | Female | |
| Full name | Greta Naemi•Onnela (-Knoblock) | |
| Used name | Greta•Onnela | |
| Born | 23 August 1910 in Vaasa, Pohjanmaa |  FIN |
| Died | 10 August 1957 (aged 46 years 11 months 18 days) in Vaasa, Pohjanmaa | FIN |
| Affiliations | Vaasan Uimaseura — Vaasa, Pohjanmaa | FIN |
| NOC | Finland | FIN |
Greta Onnela was a Finnish diver who represented Vaasan Uimaseura. Onnela competed in the platform dive at the 1928 Amsterdam Olympics. She finished in fifth place in the final.
| Games | Discipline (Sport) / Event | NOC / Team | Pos | Medal | As | |
|---|---|---|---|---|---|---|
| 1928 Summer Olympics | Diving (Aquatics) | FIN |
Greta Onnela | |||
| Platform, Women (Olympic) | 5 |
