| Link | Location |
|---|
 | Samantha O'Neill | Swindon, Royaume-Uni |
| Conor O'Reilly | Dublin, Irlande |
| Colm O'Shea | Galway, Irlande |
| Conor O'Sullivan | Dublin/London, Irlande |
| John O’Brien | Boston, Massachusetts, États-Unis |
| Sagar Oak | Munich, Allemagne |
| Haruka Oba | Tokyo, Japon |
| Florian Obermayer | Munich, Allemagne |
| Chris Oberndorfer | Duvall, Washington, États-Unis |
| DMITRIY OBREZKOV | Moscow, Russie, Fédération de |
 | Samuel Obuch | Brno, Tchéquie |
| Greta Obuchaviciute | Kuwait City, Koweït |
| Katarzyna Obuchowska | Wrocław, Pologne |
| Naoki Ochiai | Tokyo, Japon |
| Marcin Ochota | Wrocław, Pologne |
