| Link | Location |
|---|
 | Glenn Onos | Matthews, North Carolina, Stati Uniti |
| Yulia Openysheva | Moscow online, Russia |
| Robert-Jan Opschoor | Den Haag, Paesi Bassi |
 | Marta Orbitowska | Szczecin, Polonia |
| Aleksander Oreshkov | Moscow, Russia |
| PAVEL ORLOV | Jakarta, Indonesia |
| Guillaume Orsoni | Paris, Francia |
 | Konstantins Oševerovs | Riga, Lettonia |
 | Inga Osovsky | New York, New York, Stati Uniti |
 | Alberto Osuji | Lagos, Nigeria |
| Gertjan Oude Vrielink | Rotterdam, Paesi Bassi |
| Irina Ovcinicov | Warsaw, Polonia |
| Yemi Oyelola | Rockville Centre, New York, Stati Uniti |
| Bartłomiej Pachacz | Cracow, Polonia |
| Marcel Paduch | Hong Kong, Hong Kong |
