| Name | Nation |
|---|---|
| O'Bee, Kirk | USA |
| O'Grady, Stuart | AUS |
| O'Neill, Nathan | AUS |
| Oarbeascoa Ispizua, Ruben | ESP |
| Ochoa Plazas, Israel | COL |
| Odriozola Mugarza, Jon | ESP |
| Olano Manzano, Abraham | ESP |
| Omloop, Wim | BEL |
| Omloop, Geert | BEL |
| Ongarato, Rodolfo | ITA |
| Ongarato, Alberto | ITA |
| Ordowski, Volker | GER |
| Oriol, Christophe | FRA |
| Ortenzi, Gian Mario | ITA |
| Ortiz, Garikoitz | ESP |
| Osa Eizaguirre, Aitor | ESP |
| Osa Eizaguirre, Unai | ESP |
| Otero Gomez, Gustavo Miguel | ESP |
| Otto, Raphael | GER |
| Otxoa Palacios, Javier | ESP |
| Otxoa Palacios, Ricardo | ESP |
| Outschakov, Serguei | UKR |
| Ozols, Dainis | LAT |
