The 2005–06 Greek Football Cup was the 64th edition of the Greek Football Cup, competition. This season's edition was the first to be entitled "SINCO Greek Cup" after SINCO Insurance Brokers. The competition started on 20 August 2005 and concluded on 10 May 2006 with the Final, held at Pankritio Stadium. Olympiacos won the trophy with a 3-0 victory over AEK Athens.