| Link | Location |
|---|
 | Devin Osterhout | Salt Lake City, Utah, United States |
| Amanda Österling | Warsaw, Poland |
| Aleksandr Ostroukhov | Saint-Petersburg, Russian Federation |
| Andrzej Ostrowski | Wrocław, Poland |
 | Alberto Osuji | Lagos, Nigeria |
| Joe Oswald | Columbus, Ohio, United States |
| Yuki Otsuka | Tokyo, Japan |
| VADIM OTTO | Moscow, Russian Federation |
| kazuki ouchi | Tokyo, Japan |
| Kenichiro Ouchi | Tokyo, Japan |
| Anita Owczarek | Wrocław, Poland |
| Jaleeza Owens | Cottage Grove, Minnesota, United States |
| Shane Owens | London, United Kingdom |
| Shota Oyabu | Tokyo, Japan |
| Tomoko Oyama | Tokyo, Japan |
