| Link | Location |
|---|
 | Ivie Osobase | Live online from Sydney, Australia |
| Maciej Ossowski | Starogard Gdanski, Polonia |
| Magdalena Ostalska | Warszawa, Polonia |
| Alena Ostanina | Astana, Kazakistan |
| Devin Osterhout | Salt Lake City, Utah, Stati Uniti |
| Amanda Österling | Warsaw, Polonia |
| Aleksandr Ostroukhov | Saint-Petersburg, Russia |
| Andrzej Ostrowski | Wrocław, Polonia |
| Franciszek Ostrowski | Rzeszów, Polonia |
 | Alberto Osuji | Lagos, Nigeria |
| Joe Oswald | Columbus, Ohio, Stati Uniti |
| Yuki Otsuka | Tokyo, Giappone |
| VADIM OTTO | Moscow, Russia |
| kazuki ouchi | Tokyo, Giappone |
| Kenichiro Ouchi | Tokyo, Giappone |
