| Olan | - | Thai Name | Olanrat | - | Thai Name |
| Olavo | - | Portuguese Name | Olcay | - | Turkish Name |
| Olefir | - | Ukrainian Name | OLEG | - | Russian Name |
| Oleh | - | Ukrainian Name | Oleh-Leonidovych | - | Ukrainian Name |
| Oleif | - | Norse Name | Oleksa | - | Ukrainian Name |
| Oleksandr | - | Ukrainian Name | Oleksandrenko | - | Ukrainian Name |
| Oleksandriv | - | Ukrainian Name | Oleksiy | - | Ukrainian Name |
| Oleksiyenko | - | Ukrainian Name | Olen | - | Ukrainian Name |
| Olexienko | - | Ukrainian Name | Olexiy | - | Ukrainian Name |
| Óli | - | Icelandic Name | Olímpio | - | Portuguese Name |
| Olin | - | Nahuatl Name | Oliphant | - | Scottish Name |
| Oliver | - | French Name | Óliver | - | Icelandic Name |
| Oliver | - | United States Name | Olivier | - | French Name |
| Oliwa | - | Polynesian Name | Ollie | - | United States Name |
| Ollin | - | Nahuatl Name | Olmir | - | Cyprien Name |
| Oluwafemi | - | Cameroon Name | Oluwaseun | - | Cameroon Name |
| Om | - | Indian Name | Om | - | Hindu Name |
| Oma | - | Hindu Name | Omair | - | Muslim Name |
| Omanand | - | Indian Name | Omanand | - | Hindu Name |
| OMAR | - | Muslim Name | Omar | - | Indian Name |
| Omar | - | Hindu Name | Omar | - | Biblical Name |
| Ómar | - | Icelandic Name | Omar | - | United States Name |
| Omari | - | Egyptian Name |
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