| Oh-jin | - | Korean Name | Oh-joon | - | Korean Name |
| Oh-kyu | - | Korean Name | Oh-min | - | Korean Name |
| Oh-ryong | - | Korean Name | Oh-seok | - | Korean Name |
| Oha | - | Indian Name | Oha | - | Hindu Name |
| Ohad | - | Biblical Name | Ohanko | - | American Name |
| Ohanzee | - | American Name | Ohas | - | Indian Name |
| Ohas | - | Hindu Name | Ohcumgache | - | American Name |
| Ohel | - | Biblical Name | Ohini | - | African Name |
| Ohitekah | - | American Name | Oidhche | - | Scottish Name |
| Oilak | - | Eskimo Name | Oinuk | - | Eskimo Name |
| Oiruk | - | Eskimo Name | Oisak | - | Eskimo Name |
| Oivak | - | Eskimo Name | Ojal | - | Hindu Name |
| Ojas | - | Indian Name | Ojas | - | Hindu Name |
| Ojayit | - | Hindu Name | Oji | - | African Name |
| Ojo | - | African Name | Oka | - | Indonesian Name |
| Okan | - | Turkish Name | Okay | - | Turkish Name |
| Oke | - | Hawaiian Name | Okechukwu | - | Cameroon Name |
| Okello | - | African Name | Okhmhaka | - | American Name |
| Okky | - | Indonesian Name | Oko | - | African Name |
| Okoth | - | African Name | Okpara | - | Egyptian Name |
| Oksentiy | - | Ukrainian Name | Okta | - | Indonesian Name |
| Oktay | - | Turkish Name | Ola | - | Swedish Name |
| Oladipo | - | Cameroon Name | Olaf | - | Danish Name |
| Ólafur | - | Icelandic Name | Olamide | - | Cameroon Name |
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