| Link | Location | |
|---|---|---|
 | Piotr Opalacz | Kraków, Polonia |
| Pavel Oparin | Almaty, Kazakistan |
| 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 |
| Adam Or | Hong Kong, Hong Kong |
.jpg?preferred_lang=it){kind=avatar} | Alina Orasanu | Munich, Germania |
| Jouko Orava | Vaasa, Finlandia |
| Andrés Orduz | Brussels, Belgio |
| Miriam Orejana | Madrid, Spagna |
| Michal Orenburg | Tel Aviv, Israele |
 | Diego Oreona | A Coruña, Spagna |
