The 1983 King Cup was the 25th season of the knockout competition since its establishment in 1956. Al-Hilal were the defending champions, but they were eliminated by Al-Ahli in the semi-finals.
Bracket
Source: Al-Jazirah ==Round of 32==
Round of 32
The matches of the Round of 32 were played on 14 and 15 April 1983. ==Round of 16==
Round of 16
The Round of 16 matches were held on 21 and 22 April 1983. ==Quarter-finals==
Quarter-finals
The Quarter-final matches were held on 28 and 29 April 1983. ==Semi-finals==
Semi-finals
The four winners of the quarter-finals progressed to the semi-finals. The semi-finals were played on 5 and 6 May 1983. All times are local, AST (UTC+3). ==Final==
Final
The final was played between Al-Ettifaq and Al-Ahli in the Youth Welfare Stadium in Riyadh. Al-Ahli were appearing in their 12th final while Al-Ettifaq were appearing in their fourth the final. This final was a repeat of the 1965 final which ended in a win for Al-Ahli. == Top goalscorers ==