| Link | Location | |
|---|---|---|
 | Elisabeth Orthuber | Munich, Germany |
 | Jesper Ørting | Hobro, Denmark |
| Angela Ortiz | Phoenix - Chandler, Arizona, United States |
| Natalie Ortiz | Redlands, California, United States |
| Sebastian Ortlepp | Munich, Germany |
 | Alex Ortner | London, United Kingdom |
| Markus Ortner | Nürnberg, Germany |
| Henrik P Orvin | Gråsten, Denmark |
| Ron Osawa | Hong Kong, Hong Kong |
| Ikenna Osayi | Berlin, Germany |
| James Osborn | London, United Kingdom |
| Taito Oshima | Tokyo, Japan |
 | Kenji Oshio | Tokyo, Japan |
| Elisey Oshlokov | Москва, Russia |
| Siarhei Oshyn | Minsk, Belarus |
