| Coureur | Nat | Geb. / Overl. | Cm / Kg | Zeges | Dit jaar |
|---|---|---|---|---|---|
| Hideyuki Ochiai | JPN | 1956-09-28 | ??cm / ??kg | 0 | 0 |
| Yutaka Ochiai | JPN | ??cm / ??kg | 0 | 0 | |
| Stanislaw Ochman | POL | ??cm / ??kg | 0 | 0 | |
| Carlos Francisco Ochoa | PHI | 1994-05-31 | ??cm / ??kg | 0 | 0 |
| Carlos Jose Ochoa | VEN | 1980-12-14 | ??cm / ??kg | 0 | 0 |
| Jésus Ochoa | SPA | ??cm / ??kg | 0 | 0 | |
| Ramon Ochoa | SPA | ??cm / ??kg | 0 | 0 | |
| Diego Antonio Ochoa Camargo | COL | 1993-06-05 | ??cm / ??kg | 0 | 0 |
| Miguel Ochoa Gonzalez | SPA | 1985-08-12 | ??cm / ??kg | 0 | 0 |
| Agustin Ochoa Irasvegui | SPA | ??cm / ??kg | 0 | 0 | |
| Richard Ochoa Quintero | VEN | 1984-02-14 | ??cm / ??kg | 0 | 0 |
| Jésus Ochotorena | SPA | ??cm / ??kg | 0 | 0 | |
| William 'Bill' Ochs | DUI | ??cm / ??kg | 0 | 0 | |
| Richard Ochsner | ZWI | 1927-11-05 | ??cm / ??kg | 0 | 0 |
| Jasper Ockeloen | NED | 1990-05-10 | ??cm / ??kg | 0 | 0 |
| Jhay Norberto Oconer Jr. | PHI | 2003-03-16 | ??cm / ??kg | 0 | 0 |
| Hijiri Oda | JPN | 1998-11-23 | ??cm / ??kg | 0 | 0 |
| Anders Oddli | NOR | 1994-04-22 | ??cm / ??kg | 0 | 0 |
| Guido Oddone | ITA | ??cm / ??kg | 0 | 0 | |
| Felix Odebrecht | DUI | 1984-09-15 | ??cm / ??kg | 0 | 0 |
| Jaco Odendaal | ZAF | 1982-07-12 | ??cm / ??kg | 0 | 0 |
| Alfred Oderie | NED | 1908-09-28 | ??cm / ??kg | 0 | 0 |
| Jesper Odgaard Nielsen | DEN | 1984-07-07 | ??cm / ??kg | 0 | 0 |
| Ennio Odino | ITA | 1924-06-08 | ??cm / ??kg | 0 | 0 |
| Guido Odonne | FRA | ??cm / ??kg | 0 | 0 | |
| Ander Odriozola Martija | SPA | 1983-02-08 | ??cm / ??kg | 0 | 0 |
| Bart Oegema | NED | 1983-02-23 - 2011-01-11 | ??cm / ??kg | 0 | 0 |
| Ernst Oehler | DUI | ??cm / ??kg | 0 | 0 | |
| Ryan Oeklers | USA | 1973-06-20 | ??cm / ??kg | 0 | 0 |
| Jan Oelerich | DUI | 1988-03-30 | ??cm / ??kg | 0 | 0 |
| Tim Oelke | DUI | 2001-01-04 | ??cm / ??kg | 0 | 0 |
| Oelkers | DUI | ??cm / ??kg | 0 | 0 | |
| Ernst Oesch | ZWI | 1924-07-21 | ??cm / ??kg | 0 | 0 |
| Peter Oeschger | CZE | 1980-02-21 | ??cm / ??kg | 0 | 0 |
| Yosandy Darmawan Oetomo | INA | 2000-04-26 | ??cm / ??kg | 0 | 0 |
| Mario Officio | ITA | 1938-08-05 | ??cm / ??kg | 0 | 0 |
| Takahiko Ogato | JPN | 1998-12-05 | ??cm / ??kg | 0 | 0 |
| Domenico Oggero | ITA | ??cm / ??kg | 0 | 0 | |
| Ben Ogle | AUS | ??cm / ??kg | 0 | 0 | |
| Giuseppe Ogna | ITA | 1933-11-05 | ??cm / ??kg | 0 | 0 |
| Giovanni Ogulin | ITA | ??cm / ??kg | 0 | 0 | |
| Je-Seok Oh | KOR | 1997-09-18 | ??cm / ??kg | 0 | 0 |
| Taehee Oh | KOR | 1993-08-18 | ??cm / ??kg | 0 | 0 |
| Henry Ohayon | ISR | 1934-06-17 - 2023-10-27 | ??cm / ??kg | 0 | 0 |
| Hirostoshi Ohi | JPN | ??cm / ??kg | 0 | 0 | |
| Minoru Ohkawa | JPN | ??cm / ??kg | 0 | 0 | |
| Brian Ohlson | USA | 1957-11-27 | ??cm / ??kg | 0 | 0 |
| Manabu Ohwada | JPN | ??cm / ??kg | 0 | 0 | |
| Hiroshi Ohzono | JPN | ??cm / ??kg | 0 | 0 | |
| Justin Oien | USA | 1995-05-05 | ??cm / ??kg | 0 | 0 |