Gianni Da Ros (born 26 August 1986, in Pordenone) is an Italian professional road bicycle racer who rode one season for UCI ProTour team .
On Wednesday 11 March 2009, Da Ros was arrested by Italian police investigating the trafficking of banned doping products.
On 23 November 2009, he was handed a record 20-year ban from the National Anti-doping Tribunal for trafficking doping substances. This was later reduced to four years by the Court of Arbitration, with his ban ending in March 2013.