| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Ottokar | - | German | ||
| Ottoline | - | English (Rare) | ||
| Ottomar | - | German | ||
| Ottone | - | Italian | ||
| Ottorino | - | Italian | ||
| Ouida | - | Various | ||
| Ourbanos | - | Biblical Greek | ||
| Ouri | - | Biblical Greek | ||
| Ourias | - | Biblical Greek | ||
| 'Ovadyah | - | Biblical Hebrew | ||
| Ove | - | Swedish, Norwegian, Danish | ||
| Oved | - | Hebrew, Biblical Hebrew | ||
| Ovidio | - | Italian, Spanish | ||
| Ovidiu | - | Romanian | ||
| Ovidius | - | Ancient Roman |