| Link | Location |
|---|---|
| Henrik P Orvin | Gråsten, Denmark |
| Ron Osawa | Hong Kong, Hong Kong |
| Ikenna Osayi | Berlin, Germany |
| James Osborn | London, United Kingdom |
| Daniel Osborne | London, United Kingdom |
| Petrucci Oscar | Milan, Italy |
| Konstantins Oševerovs | Riga, Latvia |
| Taito Oshima | Tokyo, Japan |
| Kenji Oshio | Tokyo, Japan |
| Siarhei Oshyn | Minsk, Belarus |
| Piotr Osinski | Munich, Germany |
| Inga Osovsky | New York, New York, United States |
| Martin Osovsky | Prague, Czechia |
| Josip Osrečki | Zagreb, Croatia |
| John Ossendorp | Nieuwegein, Netherlands |
