| Gender | Male |
|---|---|
| Language | Igala |
| Origin | Nigeria |
| Meaning | leader or head of the people |
Onoja is a Nigerian surname. Notable people with the surname include:
- Edward Onoja (born 1974), deputy governor of Kogi State (2019–2024)
- Lawrence Onoja (born 1948), military governor of Plateau State
- Mike Onoja, Nigerian businessman and public administrator
- Ogwu James Onoja (born 1968), Nigerian lawyer and notary