In the world, Onua (Onua 
) is a rare epicene first name. The given name Onua is characteristic of Sub-Saharan Africa, particularly Nigeria, where it is a rare unisex name. Likewise, Onua is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Onua | Nigeria, United States, South Africa, Ghana, India |
| onua thomas obasi English footballer (born 1988), GB (b. 1988) |
|