| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Osee | - | Biblical Latin, Biblical Greek | ||
| Oshea | - | Biblical | ||
| Othniel | AWTH-nee-əl (English) | Biblical | ||
| Ourbanos | - | Biblical Greek | ||
| Ouri | - | Biblical Greek | ||
| Ourias | - | Biblical Greek | ||
| Oved | - | Hebrew, Biblical Hebrew | ||
| Ozazias | - | Biblical Greek | ||
| Ozi | - | Biblical Latin, Biblical Greek | ||
| Ozias | - | Biblical Latin, Biblical Greek | ||
| Oziel | - | Biblical Greek | ||
| Ozihel | - | Biblical Latin |