The 1985 King Cup was the 27th season of the knockout competition since its establishment in 1956. Al-Hilal were the defending champions but they were eliminated by eventual champions Al-Ettifaq in the final. This was the first edition of the competition to have 16 teams participate instead of 32. Al-Ettifaq won their 2nd title after defeating Al-Hilal 1–0 in the final.