| Name | Name in Tamil | 
|---|---|
| Olinthan | |
| Olirmathan | |
| Oliveanthan | ஒளிவேந்தன் | 
| Oliventhan | |
| Omaar | |
| Omanand | |
| Omar | |
| Omeshen | |
| Omkar | |
| Omkarnath | |
| Ommurugan | |
| Ommuthukannan | |
| Omprakaash | |
| Omprakash | |
| Ongaran | |
| Onkaran | |
| Oongaaran | |
| Oongaran | |
| Oormilan | |
| Oosayiniyavan | ஓசையினியவன் | 
| Name | Name in Tamil | 
|---|---|
| Olinthan | |
| Olirmathan | |
| Oliveanthan | ஒளிவேந்தன் | 
| Oliventhan | |
| Omaar | |
| Omanand | |
| Omar | |
| Omeshen | |
| Omkar | |
| Omkarnath | |
| Ommurugan | |
| Ommuthukannan | |
| Omprakaash | |
| Omprakash | |
| Ongaran | |
| Onkaran | |
| Oongaaran | |
| Oongaran | |
| Oormilan | |
| Oosayiniyavan | ஓசையினியவன் |