Participants
| Turki Obaidat | Jordan |
| Rana Obeidat | Jordan |
| Hayel Obeidat | |
| Abdalla Odat | Jordan |
| Satoru Ohtake | Japan |
| Francisca Okeke | Nigeria |
| Gossett Oliver | Jamaica |
| Tolu Oni | United Kingdom |
| Yvonne Onmonya | Nigeria |
| Esther Orozco | Mexico |
| Mwaffaq Otoom | Jordan |
| Nicholas Ozor | Kenya |
| Edward Oakden | |
| Nadim Obeid | |
| Motaz Obeidat | |
| César Ocampo | Colombia |
| Terri OH | Singapore |
| Batool Okor | |
| Fiorella Olivera Venturo | Peru |
| Megan Olson | |
| Majeda Omar | Jordan |
| Safwan Omari | Jordan |
| Hayet Omri | Tunisia |
| Duaa Abu Orabi | |
| Athar Osama | Pakistan |
| Alethea Osborne | United Kingdom |
| Shigeo Oshima | Japan |