The Apito Dourado () affair is a sports corruption scandal in Portuguese football that first arose in 2004. Portuguese Judiciary Police ("Polícia Judiciária") investigators named several football personalities as suspects ("arguidos") of corrupting or attempting to corrupt referees, including Jorge Nuno Pinto da Costa, chairman of FC Porto, and the former Boavista F.C. chairman and Portuguese League for Professional Football President Valentim Loureiro. Although less notorious, a major part of the affair involved lower division referees and clubs, namely UD Sousense and Gondomar S.C., and club officials.