The 1986 King Cup was the 28th season of the knockout competition since its establishment in 1956. Al-Ettifaq were the defending champions but they were eliminated by Al-Tai in the quarter-finals.
Al-Nassr won their 4th title after defeating Al-Ittihad 1âÂÂ0 in the final. This was their first title since 1981.
Note: H: Home team, A: Away team
Source: Al Jazirah
The matches of the Round of 16 were held on 6 and 7 January 1986.
The Quarter-final matches were held on 10 January 1986.
The four winners of the quarter-finals progressed to the semi-finals. The semi-finals were played on 13 January 1986. All times are local, AST ().
The final was played between Al-Nassr and Al-Ittihad in the Youth Welfare Stadium in Al-Malaz, Riyadh. Al-Ittihad were appearing in their 10th while Al-Nassr were appearing in their 7th final.