| Link | Location | |
|---|---|---|
 | Yulia Openysheva | Moscow online, Russia |
| Douglas Opfer | Houston, Texas, Stati Uniti |
| Bas Opgelder | Hoofddorp, Paesi Bassi |
| Heino Ophey | Karlsruhe, Germania |
| Luca Oppedisano | Turin, Italia |
| Thomas Oppermann | Berlin, Germania |
| Gabriela Oprea | Bucharest, Romania |
| Robert-Jan Opschoor | Den Haag, Paesi Bassi |
| Adam Or | Hong Kong, Hong Kong |
.jpg?preferred_lang=it){kind=avatar} | Alina Orasanu | Munich, Germania |
| Jouko Orava | Vaasa, Finlandia |
 | Marta Orbitowska | Szczecin, Polonia |
| Andrés Orduz | Brussels, Belgio |
| Miriam Orejana | Madrid, Spagna |
 | Diego Oreona | A Coruña, Spagna |
