| Name | Gender | Pronounced | Usage | Popularity |
|---|---|---|---|---|
| Orlanda | or-LAHN-dah | Italian | ||
| Orlando | or-LAHN-do | Italian | ||
| Ormazd | OR-mazd | Persian Mythology | ||
| Ormond | AWR-mənd | English (Rare) | ||
| Ormonde | - | English (Rare) | ||
| Ornella | - | Italian | ||
| Oroitz | - | Basque | ||
| Orpah | AWR-pə (English) | Biblical | ||
| Orpha | AWR-fə (English) | Biblical, English | ||
| Orrell | - | English (Rare) | ||
| Orsina | - | Italian | ||
| Orsino | - | Italian | ||
| Orso | - | Italian | ||
| Orsola | OR-so-lah | Italian | ||
| Orsolya | - | Hungarian |