| Orlanda | German | Meaning "famous land." A feminine f.. |  |  |
| Ornat | Irish | Anglicized form of Odharnait (littl.. | | |
| Ornette | French | French cognate of Ornetta, an alter.. | | |
| Ornice | Hebrew | Meaning "cedar tree."
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| Orpah | Biblical | Hebrew name meaning "a fawn, a .. | | |
| Orpah | Hebrew | A fawn, a forelock. The name Orpah .. |  | |
| Orquidea | Spanish | "orchid." | | |
| Orsolya | Hungarian | Hungarian form of the Latin Ursula,.. | | |
| Ortensia | Italian | Derived from the Latin Hortensia, a.. | | |
| Orthia | Greek | Derived from orthos (straight). The.. | | |
| Orthia | Mythology a.. | Derived from the Greek orthos (stra.. | | |
| Orva | French | Meaning "golden" or "worthy."
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| Osarogre | Beninese | For families that choose to follow .. | | |
| Oseye | African | The happy one, the joyous one. Beni.. | | |
| Oseye | Nigerian | Meaning "happy one."
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| Oskaloosa | Native Amer.. | A name of questionable origin and m.. | | |
| Osma | English | Meaning "divine protector." A femin.. | | |
| Osyka | Native Amer.. | Eagle. Choctaw | | |
| Otewomin | Native Amer.. | Literally meaning "heart-berry," it.. | | |
| Otilie | Slovak | Derived from the French Ottilie, .. | | |
| Otillie | Czech | Meaning "lucky heroine." | | |
| Ottavia | Italian | Feminine form of Octavius, which is.. | | |
| Otthild | German | Compound name composed of the Germa.. | | |
| Otylia | Polish | Derived from the French Ottilie, a .. | | |
| Otzara | Hebrew | Treasure, riches | | |
| Ourania | Greek | Classical name meaning "the heavenl.. | | |
| Ovelia | Spanish | Spanish form of the Greek Ophelia (.. | | |
| Owena | Welsh | Feminine form of Owen, an old nam.. | | |
| Ozara | Hebrew | Signifying "treasure" or "wealth."
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| Ozera | Hebrew | Help, assistance, helper | | |
| Ozigbodi | Ghanaian | Meaning "patience."
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