The 1989 King Cup was the 31st season of knockout competition since its establishment in 1956. Al-Ittihad were the defending champions for this season, but they were eliminated by Al-Nassr in Round of 16.
The final was played between Al-Hilal and Al-Nassr in the Youth Welfare Stadium in Jeddah. Al-Hilal were appearing in their 12th final while Al-Nassr were appearing in their 9th final.