Browse our list of 50 names starting with the letter O.
| Oalo | Boy | Small |
| Obadiah | Boy | Servant of god |
| Obafemi | Boy | The King loves me. |
| Obaloluwa | Boy | God is the king. |
| Obasolape | Boy | Yoruba term meaning God has made his wealth complete. |
| Obatotosinloluwa | Boy | God is indeed worthy of praise. |
| Obed | Boy | A short form of obadiah |
| Oberon | Boy | elfruler |
| Oboganriemu | Boy | Be strong to survive |
| Obuya | Boy | Born when the garden was overgrown. |
| Ochieng | Boy | Born in the daytime. |
| Ociel | Boy | Heaven, heavenly |
| Octavian | Boy | Eighth |
| Odafe | Boy | Rich individual |
| Odbart | Boy | One who is wealthy and rich. |
| Oded | Boy | Strong omar - first son, disciple |
| Odell | Boy | woad(aplantyieldingbluedye) |
| Odikinyi | Boy | One who was born in the early morning. |
| Odisej | Boy | To hate or to be grieved. |
| Odongo | Boy | Second of twins. |
| Odour | Boy | Born after midnight. |
| Odran | Boy | littles allowone |
| Odunayo | Boy | Year of happiness. |
| Oehoo | Boy | One who is watchful, vigilant. |
| Oeznik | Boy | Slovak word for butcher. |
| Ofer | Boy | gold |
| Ogbamremu | Boy | The brave meets a lot of challenges |
| Ogden | Boy | Oak valley. |
| Ognian | Boy | Variant transcription of Ognyan, meaning fiery. |
| Ognyan | Boy | Derived from Bulgarian word ognen, meaning fiery. |
| Ogooluwa | Boy | The glory of God. |
| Ogoro | Boy | Frog |
| Ohon | Boy | The name is preserved. |
| Ohwahwa | Boy | Cold season |
| Ohwofasa | Boy | A person's status should be defined by his achievement |
| Ohwonigho | Boy | A person is greater than riches |
| Ojakorotu | Boy | This is a group challenge |
| Ojwang | Boy | One who survived despite neglect. |
| Okagbare | Boy | I have all styles and skills |
| Okello | Boy | One who was born after twins. |
| Okeyo | Boy | One who was born during the harvest. |
| Okorie | Boy | Born on Orie |
| Okoro | Boy | Man |
| Okpara | Boy | One who is born in Okpara |
| Okpogoro | Boy | A big toad |
| Okropir | Boy | Gold mouth |
| Olabamiji | Boy | Wealth wakes with me. |
| Olabisi | Boy | The joy is multiple. |