| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| OLYMPIA | - | Greek, Slovak | ||
| OLYMPIAS | - | Ancient Greek | ||
| OLYMPIODOROS | - | Ancient Greek | ||
| OLYMPOS | - | Ancient Greek | ||
| OLYVIA | ə-LIV-ee-ə | English (Rare) | ||
| OM | - | Indian, Hindi, Marathi | ||
| OMAR (1) | - | Arabic, English | ||
| OMAR (2) | - | Biblical | ||
| OMEGA | o-MAY-gə (English) | Various | ||
| OMER | ‘om-ER | Hebrew | ||
| OMID | - | Persian | ||
| OMIROS | - | Greek | ||
| OMOBOLANLE | - | Western African, Yoruba | ||
| OMOLARA | - | Western African, Yoruba | ||
| OMRI | - | Biblical, Hebrew, Biblical Hebrew |