Fabio Aru (born 3 July 1990) is an Italian former professional road bicycle racer, who rode professionally between 2012 and 2021 for the Astana, UAE Team Emirates and Team Qhubeka NextHash squads. He hails from San Gavino Monreale in Sardinia, and is known for his climbing ability, which made him a favorite for the Grand Tours. He is known as "The Knight of the four Moors", a reference to his native island of Sardinia.

During his career, Aru won stages in all three Grand Tours, including a stage at the Tour de France, three stages at the Giro d'Italia and two stages at the Vuelta a España, and won the 2017 Italian National Road Race Championships. Alongside his stage wins, Aru has also worn the race leader's jersey in all three Grand Tours. In 2014, Aru placed third overall in the Giro d'Italia and fifth in the Vuelta a España. The following year, he finished second in the Giro d'Italia before taking his only overall Grand Tour win at the Vuelta a España. His best finish at the Tour de France came in 2017 where he was 5th.