| Ochola | Man | African - Luo of Kenya Names |
| Octave | Man | French Names |
| Octavia | Woman | Latin Names |
| Octavian | Man | Latin Names |
| Octavio | Man | Latin Names |
| Octavious | Man | Latin Names |
| Octavius | Man | Latin Names |
| October | Unisex | American Names |
| Oda | Man | Japanese Names |
| Odahingum | Woman | Native American - Chippewa Names |
| Odakota | Man | Native American - Sioux Names |
| Odalys | Unisex | Spanish Names |
| Odart | Man | German - Old High German Names |
| Ode | Unisex | English Names |
| Oded | Man | Hebrew Names |
| Odeda | Woman | Hebrew Names |
| Odele | Woman | German Names |
| Odelia | Woman | Hebrew Names |
| Odell | Unisex | English Names |
| Odelya | Woman | Hebrew Names |