| Personal information | |||
|---|---|---|---|
| Date of birth | 30 April 2004 | ||
| Place of birth | Helsinki, Finland | ||
| Height | 1.86 m (6 ft 1 in) | ||
| Position(s) | Left winger | ||
| Youth career | |||
| –2021 | KäPa | ||
| Senior career* | |||
| Years | Team | Apps | (Gls) |
| 2022 | KäPa | 23 | (5) |
| 2023–2024 | KuPS | 1 | (0) |
| 2023–2024 | KuPS II | 1 | (0) |
| 2023 | → KäPa (loan) | 7 | (0) |
| 2024 | Honka | 1 | (0) |
| International career‡ | |||
| 2019 | Finland U16 | 4 | (1) |
| 2022 | Finland U18 | 5 | (0) |
| *Club domestic league appearances and goals, correct as of 13 October 2024 ‡ National team caps and goals, correct as of 21 July 2024 | |||
Onni Viljaa (born 30 April 2004) is a Finnish professional football player who plays as a left winger. [1] [2] [3] [4]