| Link | Location | |
|---|---|---|
 | Elisabeth Orthuber | Munich, Germania |
 | Jesper Ørting | Hobro, Danimarca |
| Angela Ortiz | Phoenix - Chandler, Arizona, Stati Uniti |
| Natalie Ortiz | Redlands, California, Stati Uniti |
| Sebastian Ortlepp | Munich, Germania |
 | Alex Ortner | London, Regno Unito |
| Markus Ortner | Nürnberg, Germania |
| Henrik P Orvin | Gråsten, Danimarca |
| Ron Osawa | Hong Kong, Hong Kong |
| Ikenna Osayi | Berlin, Germania |
| James Osborn | London, Regno Unito |
| Taito Oshima | Tokyo, Giappone |
 | Kenji Oshio | Tokyo, Giappone |
| Elisey Oshlokov | Москва, Russia |
| Siarhei Oshyn | Minsk, Bielorussia |
