| Oke Kar Min |
| Okkar Kyaw |
| Okkar Min |
| Okui, Hiroyuki |
| Okut, Idorenyin Thomas |
| Olarn Moungyimpong |
| Olavides, Alan L. |
| Oleg V. Shipin |
| Olino, Roan Marrielle Garing |
| Olis, Alexander C. |
| Olorundare, Ranti Matthias |
| Olorvida, Rey Cesar V. |
| Oluwole, Akadiri Peter |
| Omkareshwar, Katta |
| Omob, S M Fahim Shahriar |
| On-anong Larpparisudthi |
| On-usah Thongthai |
| Onanong Cheablam |
| Onanong Longpichai |
| Onanong Nopkhun |