Here are all the Celtic boy's and girl's names beginning with the letter 'O'.
All Celtic boy's names from Odanodan to Owyn,
and Celtic girl's names from Obharnait to Owena.
Sort these 'O' names alphabetically or by popularity - find your favorite name and vote for it, to help it rise up the charts.
| Boy | Girl | |
|---|---|---|
| Odanodan | Obharnait | |
| Odell | Ohnicio | |
| Odhran | Oifa | |
| Odran | Oilbhe | |
| Oengus | Oilell | |
| Oistin | Olive | |
| Oran | Olwen | |
| Orin | Olwyn | |
| Oscar | Oma | |
| Osckar | Omat | |
| Oskar | Ona |