Browse our list of 50 names starting with the letter O.
| Ogden | Boy | Oak valley. |
| Ognian | Boy | Variant transcription of Ognyan, meaning fiery. |
| Ognyan | Boy | Derived from Bulgarian word ognen, meaning fiery. |
| Ognyana | Girl | Feminine form of Ognyan, meaning fiery. |
| Ogooluwa | Boy | The glory of God. |
| Ogoro | Boy | Frog |
| Ohawna | Girl | God's gracious gift |
| Ohndrea | Girl | man warrior |
| Ohndreea | Girl | man warrior |
| Ohndria | Girl | man warrior |
| 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 |
| Ojaswini | Girl | Lustrous, Bright |
| Ojayit | Boy | Courageous |
| Ojwang | Boy | One who survived despite neglect. |
| Okagbare | Boy | I have all styles and skills |
| Okello | Boy | One who was born after twins. |
| Oketa | Girl | Tongan word for orchid. |
| 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 |
| Oksana | Girl | Hospitality |
| Oksanna | Girl | Hospitality |
| Olabamiji | Boy | Wealth wakes with me. |
| Olabisi | Boy | The joy is multiple. |
| Olabode | Boy | Wealth has come home. |
| Oladayo | Boy | Wealth has become joy. |
| Olaf | Boy | The remaining of the ancestors |
| Olasyar | Boy | People's friend, one with a friendly disposition |
| Olavo | Boy | Elf army |
| Olbert | Boy | Famous for his inheritance |
| Olcay | Girl | Champion, conqueror, leader, victor. |
| Oldoich | Boy | Prosperity and power |
| Oldooz | Girl | A Persian-Azerbaijani Name Meaning Star |
| Ole | Boy | Ancestor |
| Oleos | Boy | The holy oil used in the church. |
| Olev | Boy | Estonian form of Olaf. It means ancestor's descendant. |
| Olevia | Girl | An olive branch who represents peace |
| Oli | Boy | elfarmy |
| Olin | Boy | Holly |
| Olive | Girl | Latin for beauty |
| Oliver | Boy | From the olive tree |