| Omosede | Nigerian | Translated literally, means "a chil.. |  |  |
| Omosupe | Nigerian | Meaning "a child is the most precio.. | | |
| Omri | Hebrew | Hebrew name of debated meaning... | | |
| Omusupe | African | She is the most precious thing. Ben.. | | |
| Onacoma | Native Amer.. | Meaning "white owl," from the Chero.. | | |
| Onacona | Native Amer.. | White owl. Cherokee | | |
| Onaiwah | Native Amer.. | Awake. Ojibway | | |
| Onaona | Hawaiian | "Pleasant fragrance."
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| Onatah | Native Amer.. | Meaning "daughter of the earth and .. | | |
| Onawa | American | Meaning "wide awake." | | |
| Ondrea | Czech | A form of the Latin name Andrea, .. | | |
| Ondrej | Slovak | Czech form of Andrew, which i.. |  | |
| Ondrij | Ukrainian | Meaning "brave." | | |
| Ondro | Czech | Meaning "manly." | | |
| Onean | Native Amer.. | "Yellow." From the Zuni.
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| Oneida | American | Derived from the Iroquois Oneiute (.. | | |
| Oneida | Native Amer.. | A tribal name that means "standing .. | | |
| Onella | Hungarian | Meaning "light." | | |
| Ongwatero.. | Native Amer.. | He lightens the sky for us. Iroquoi.. | | |
| Oni | African | Desired, wanted. Benin, Nigeria | | |
| Oni | Nigerian | Meaning "born in a sacred abode."
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| Oniatario | Native Amer.. | Sparkling or beautiful water, fine .. | | |
| Onii | African | Born in a sacred place. Yoruba, Nig.. | | |
| Onkar | Indian | Meaning "pure being." Another name .. | | |
| Onofrio | German | An alternate form of Humphrey | | |
| Onslow | English | Meaning "enthusiast's hill." | | |
| Onssi | Native Amer.. | Meaning "eagle." From the Choctaw.
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| Onufry | Polish | A form of die German name Hump.. | | |
| Onwarenhi.. | Native Amer.. | Tree cutter. Mohawk | | |
| Onwoachi | African | God's world, God's earth. Ibo, Nige.. | | |
| Oona | Irish | An ancient Irish name meaning ".. | | |
| Opa | Native Amer.. | Owl. Choctaw | | |
| Opal | English | Taken from opal (a semiprecious gem.. |  | |
| Opal | Mythology a.. | The name of the iridescent semiprec.. |  | |
| Opal | Indian | Meaning "precious stone." | | |
