First names with first character O - Page 18
| First name | Origin | Rating |
|---|---|---|
| Onofre | Spanish | 0 out of 0 votes |
| Onofrio | Greek | 0 out of 0 votes |
| Onslow | Arabic | 0 out of 0 votes |
| Onufry | Polish | 0 out of 0 votes |
| Onuphrius | Greek | 2.71 out of 17 votes |
| Onur | Turkish | 0 out of 0 votes |
| Onyekachukwu | African - Igbo | 0 out of 0 votes |
| Onyx | English | 0 out of 0 votes |
| Ooko | African - Luo of Kenya | 0 out of 0 votes |
| Oona | Irish | 3.42 out of 12 votes |