Gianluca 'Luca' Percassi (born 25 August 1980 in Milan) is an Italian retired footballer. A defender, Percassi came through the youth system at Atalanta, before signing for Chelsea as a 17-year-old, along with teammate Samuele Dalla Bona. Unlike Dalla Bona, however, he struggled to break into Chelsea's first team and only made two appearances, both as a substitute. He joined Monza on a free transfer in October 2000, and then had spells with Alzano and Spezia. In 2004, he retired from football to enter into entrepreneurship, following his father's footsteps.