List of People
| Display Name | Surnames | Given Names | Gender | Nationality | |
|---|---|---|---|---|---|
| OU Zixia | Ou | Zixia | F | CHN | |
| OUBORG Aad | Ouborg | Aad | M | NED | |
| OUDENALLER Tim | Oudenaller | Tim | M | NED | |
| OUDOM Chhoeun | Oudom | Chhoeun | M | CAM | |
| OUDSHOORN Anouk | Oudshoorn | Anouk | F | NED | |
| OUESLATI Sami | Oueslati | Sami | M | TUN | |
| OULTRAM Kate | Oultram | Kate | F | WAL | |
| OUM Srey Sok | Oum | Srey Sok | F | CAM | |
| OUMA Sharleen | Ouma | Sharleen Awino | F | KEN | |
| OUMA Olando | Ouma | Olando | M | KEN | |
| OUMA Caren | Ouma | Caren | F | KEN | |
| OUNAS Mohamed | Ounas | Mohamed Ramy | M | ALG | |
| OUNGO Samuel | Oungo | Samuel Paul | M | KEN | |
| OURIAGHLI Noam | Ouriaghli | Noam | M | MAR | |
| OUTERBRIDGE Tre | Outerbridge | Tre | M | BER | |
| OUWERLING Floor | Ouwerling | Floor | F | NED | |
| OUYANG Huarui | Ouyang | Huarui | F | CHN | |
| OVALLE Andres | Ovalle Rodriguez | Andres Guillermo | M | CHI | |
| OVANESOVA Mariia | Ovanesova | Mariia | F | RUS | |
| OVECHIKNA Nadezhda | Ovechikna | Nadezhda | F | URS |