| Olimpiada | Russian | Derived from the Greek Olympia, a f.. |  |  |
| Olina | Hawaiian | Meaning "joyous."
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| Olive | English | Evolution of the older and now unus.. |  | |
| Olivia | American | Elaboration of Olive (olive tree) |  | |
| Olivia | English | Elaboration of Olive (olive tree). .. | | |
| Olivia | Portuguese | Derived from the Latin oliva (a tre.. | | |
| Oliwja | Polish | Polish form of Olive, which is an e.. | | |
| Olli | Estonian | Meaning "pious." | | |
| Ollia | Ukrainian | Meaning "holy."
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| Olubayo | African | Greatest joy, highest joy. Yoruba, .. | | |
| Olubunmi | Nigerian | Meaning "the highest gift is mine.".. | | |
| Olufemi | African | God loves me. Yoruba, Nigeria | | |
| Olufunke | Nigerian | Translated literally, means "God gi.. | | |
| Olufunmil.. | African | God gives me joy and happiness. Yor.. | | |
| Olufunmil.. | Nigerian | Meaning "God gives me joy." | | |
| Oluremi | African | God consoles me, God is consolation.. | | |
| Oluremi | Nigerian | Meaning "God consoles me."
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| Olwen | Welsh | Compound name composed of the eleme.. | | |
| Olympe | French | Derived from the Latin Olympia, a f.. | | |
| Olympia | Greek | Feminine form of Olympios (of Oly.. | | |
| Olympia | Mythology a.. | Feminine form of the Greek Olympios.. | | |
| Oma | Hebrew | A name that means "reverent."
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| Omana | Hindu | A woman | | |
| Omemee | Native Amer.. | Pigeon, dove. Ojibway | | |
| Ominotago | Native Amer.. | Pleasant voice. Chippewa | | |
| Omolara | African | Born at the right time. Benin, Nige.. | | |
| Omorose | African | Beautiful child, lovely child. Beni.. | | |
| Omosede | Nigerian | Translated literally, means "a chil.. | | |
| Omosupe | Nigerian | Meaning "a child is the most precio.. | | |
| Omusupe | African | She is the most precious thing. Ben.. | | |
| Onaiwah | Native Amer.. | Awake. Ojibway | | |
| Onatah | Native Amer.. | Meaning "daughter of the earth and .. | | |
| Onawa | American | Meaning "wide awake." | | |
| Ondrea | Czech | A form of the Latin name Andrea, .. | | |
| Onean | Native Amer.. | "Yellow." From the Zuni.
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