The 2013 King Cup of Champions, or The Custodian of the Two Holy Mosques Cup, was the 38th season of King Cup of Champions since its establishment in 1957, and the 6th under the current edition. The top eight in the Professional League competed in the King cup which kicked off on 4 May. Al-Ahli were the defending champion but they were eliminated by Al-Shabab in semifinals. Al-Ittihad won their eighth title after beating Al-Shabab 4–2 in the final, and qualified to the Champions League.