| Personal information | |
|---|---|
| Full name | Aitor Osa Eizaguirre |
| Born |
September 9, 1973 Zestoa, Spain |
| Team information | |
| Current team | Retired |
| Discipline | Road |
| Role | Rider |
| Professional team(s) | |
| 1994–1996 | Euskadi |
| 1997–2005 | Illes Balears |
| 2006 | Liberty Seguros-Würth/Astana |
Aitor Osa Eizaguirre (born September 9, 1973 in Zestoa) is a Spanish former road bicycle racer. He is an older brother of Unai Osa. He was involved in the Operación Puerto doping case.