| Link | Location |
|---|
 | Kamil Osiński | Warszawa, Polonia |
| Miłosz Osiński | Warszawa, Polonia |
| Ezgi Osmanoglu | Munich, Alemania |
| Paweł Osmólski | Kraków, Polonia |
| Ivie Osobase | Live online from Sydney, Australia |
 | Edgardo Osorio González | Santiago, Chile |
| Maciej Ossowski | Starogard Gdanski, Polonia |
| Magdalena Ostalska | Warszawa, Polonia |
| Alena Ostanina | Astana, Kazajistán |
| Devin Osterhout | Salt Lake City, Utah, Estados Unidos |
| Amanda Österling | Warsaw, Polonia |
| Aleksandr Ostroukhov | Saint-Petersburg, Federación Rusa |
| Andrzej Ostrowski | Wrocław, Polonia |
 | Alberto Osuji | Lagos, Nigeria |
| Joe Oswald | Columbus, Ohio, Estados Unidos |
