| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Oliwia | aw-LEEV-yah | Polish | ||
| Oliwier | aw-LEEV-yer | Polish | ||
| Olja | - | Serbian | ||
| Olle | - | Swedish | ||
| Olli | OL-lee | Finnish | ||
| Ollie | AHL-ee | English | ||
| Olof | OL-of | Swedish | ||
| Olov | OL-ov | Swedish | ||
| Olubunmi | - | Western African, Yoruba | ||
| Oluchi | - | Western African, Igbo | ||
| Oluf | - | Danish | ||
| Olufemi | - | Western African, Yoruba | ||
| Olufunke | - | Western African, Yoruba | ||
| Olufunmilayo | o-loo-foo-mee-LIE-o | Western African, Yoruba | ||
| Olufunmilola | - | Western African, Yoruba |