| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Olanrewaju | - | Western African, Yoruba | ||
| Olavi | O-lah-vee (Finnish) | Finnish, Estonian | ||
| Olavo | - | Portuguese | ||
| Olayinka | - | Western African, Yoruba | ||
| OlegÁRio | - | Portuguese | ||
| Olev | - | Estonian | ||
| Oliver | AHL-ə-vər (English), AW-lee-ver (German), O-lee-ver (Finnish) | English, German, Swedish, Norwegian, Danish, Finnish, Estonian, Serbian, Croatian, Macedonian, Czech | ||
| Olubunmi | - | Western African, Yoruba | ||
| Oluchi | - | Western African, Igbo | ||
| Olufemi | - | Western African, Yoruba | ||
| Olufunke | - | Western African, Yoruba | ||
| Olufunmilayo | o-loo-foo-mee-LIE-o | Western African, Yoruba | ||
| Olufunmilola | - | Western African, Yoruba | ||
| Olujimi | - | Western African, Yoruba | ||
| Olukayode | - | Western African, Yoruba |