The 2015 King Cup, or The Custodian of The Two Holy Mosques Cup, was the 40th season of King Cup since its establishment in 1957, and the 8th under the current edition.Al-Shabab was the defending champion but was eliminated by Al Taawon in quarter-finals. This season's competition featured a total of 32 teams. 14 teams of Pro league, and 16 teams of 1st Division, and 2 teams qualifying from preliminary stage.