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 1–0 in the final. This was their first title since 1981.

Bracket

Round of 16Quarter-finalsSemi-finalsFinal
HAl-Ettifaq4
AAl-Arabi0
AAl-Ettifaq1
HAl-Tai2
AAl-Tai2
HAl-Ahli1
AAl-Tai1
HAl-Nassr2
HAl-Nassr2
AAl-Wehda0
AAl-Nassr3
HAl-Riyadh2
HAl-Kawkab1
AAl-Riyadh7
Al-Nassr1
Al-Ittihad0
HAl-Wadea1
AAl-Nahda0
AAl-Wadea0
HAl-Qadsiah2
HAl-Hilal1 (4)
AAl-Qadsiah (pen.)1 (5)
AAl-Qadsiah0
HAl-Ittihad1
HAl-Ittihad (a.e.t.)2
AAl-Ansar1
AAl-Ittihad (pen.)1 (4)
HAl-Shabab1 (2)
HAl-Shoulla1 (5)
AAl-Shabab (pen.)1 (6)

Note: H: Home team, A: Away team

Source:

Round of 16

The matches of the Round of 16 were held on 6 and 7 January 1986.

Home teamScoreAway team
Al-Ettifaq4–0Al-Arabi
Al-Kawkab1–7Al-Riyadh
Al-Nassr2–0Al-Wehda
Al-Wadea1–0Al-Nahda
Al-Ittihad2–1 (aet)Al-Ansar
Al-Ahli1–2Al-Tai
Al-Hilal1–1 (4–5 pen.)Al-Qadsiah
Al-Shoulla1–1 (5–6 pen.)Al-Shabab

Quarter-finals

The Quarter-final matches were held on 10 January 1986.

Home teamScoreAway team
Al-Tai2–1Al-Ettifaq
Al-Riyadh2–3Al-Nassr
Al-Qadsiah2–0Al-Wadea
Al-Shabab1–1 (2–4 pen.)Al-Ittihad

Semi-finals

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 (UTC+3).

Al-Nassr2–1Al-Tai
Al-Fahad 8' Al-Bishi 46'Al-Sader
Al-Ittihad1–0Al-Qadsiah
Ghurab 89'

Final

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.

Al-Nassr1–0Al-Ittihad
Yousef Khamees 37'

Top goalscorers

RankPlayerClubGoals
1Saudi Arabia Mohamed Al-SuwaiyedAl-Ittihad3
Saudi Arabia Jamal MohammedAl-Ettifaq
3Saudi Arabia Mohammed Al-MutarafAl-Riyadh2
Saudi Arabia Nasser Al-HammadAl-Tai
Saudi Arabia Nasser Al-FahadAl-Nassr