The 2012–13 Saudi Professional League (known as the Zain Professional League for sponsorship reasons) was the 37th season of the Saudi Professional League, the top Saudi professional league for association football clubs, since its establishment in 1976. The season began on 2 August 2012 and ended on 27 April 2013. Al-Shabab were the defending champions. The league was contested by the 12 teams from the 2011–12 season as well as Al-Shoulla and Al-Wehda, who joined as the promoted clubs from the 2011–12 First Division. They replace Al-Ansar and Al-Qadisiyah who were relegated to the 2012–13 First Division.