List of People
| Display Name | Surnames | Given Names | Gender | Nationality | ||
|---|---|---|---|---|---|---|
| ONISHCHENKO Sergiy | Onishchenko | Sergiy | M | UKR | ||
| ONOFRIIUK Maksym | Onofriiuk | Maksym | M | UKR | ||
| ONYEKWUE NNAJI Joshua | Onyekwue Nnaji | Joshua | M | GER | ||
| OONK Emmeliene | Oonk | Emmeliene | F | NED | ||
| OOSTENRIJK Sophia | Oostenrijk | Sophia | F | NED | ||
| OOSTHOEK Jetze | Oosthoek | Jetze | M | NED | ||
| OOSTINDIE Hans | Oostindie | Hans | M | NED | ||
| OPAČIĆ Nenad | Opačić | Nenad | M | SRB | ||
| OPHEY Clemens | Ophey | Clemens | M | GER | ||
| ÖQVIST Amanda | Öqvist | Amanda | F | |||
| ORAN Muhammet | Oran | Muhammet | M | TUR | ||
| ORBÓK Réka | Orbók | Réka | F | HUN | ||
| O'REAGAN Ruadhan | O'Reagan | Ruadhan | M | WAL | ||
| O'REGAN Ruadhan | O'Regan | Ruadhan | M | WAL | ||
| O'REGAN Aodhan | O'Regan | Aodhan | M | WAL | ||
| O'REGAN Alex | O'Regan | Alex | M | IRL | ||
| O'REILLY Hilary | O'Reilly | Hilary | F | IRL | ||
| O'REILLY Claire | O'Reilly | Claire | F | IRL | ||
| ORELLANA Candelaria | Orellana Pero | Candelaria | F | ARG | ||
| ORENGO Elena | Orengo | Elena | F | ITA |