1984 King Cup
The 1984 King Cup was the 26th season of the knockout competition since its establishment in 1956. Al-Ahli were the defending champions but they finished as runners-up.
Al-Hilal won the competition for the fifth time, beating the defending champions Al-Ahli 4–0 in the final at the Youth Welfare Stadium in Riyadh.
Bracket
Source:Round of 32
The matches of the Round of 32 were played on 21, 22, 23 and 25 March 1984.| Home team | Score | Away team |
| Damac | 2–0 | Jarash |
| Al-Shabab | 2–4 | Al-Nahda |
| Al-Raed | 1–2 | Al-Qala |
| Al-Ansar | 1–1 | Ohod |
| Al-Taraji | 0–0 | Hajer |
| Al-Wehda | 2–1 | Al-Jabalain |
| Al-Wadea | 2–3 | Al-Jazeera |
| Al-Taawoun | 4–1 | Al-Rabe'e |
| Al-Nassr | 1–0 | Al-Riyadh |
| Al-Rawdhah | 0–1 | Al-Ahli |
| Al-Khaleej | 0–1 | Al-Ittihad |
| Al-Shoulla | 2–2 | Al-Tai |
| Al-Hilal | 2–0 | Al-Tuhami |
| Al-Fateh | 3–3 | Al-Ettifaq |
| Al-Qadsiah | 2–1 | Al-Kawkab |
| Sdoos | 0–0 | Al-Qotah |
Round of 16
The Round of 16 matches were held on 29 and 30 March 1984.| Home team | Score | Away team |
| Damac | 2–1 | Al-Qala |
| Al-Taawoun | 0–2 | Al-Hilal |
| Al-Ettifaq | 1–0 | Sdoos |
| Al-Tai | 0–2 | Ohod |
| Al-Ittihad | 7–0 | Hajer |
| Al-Wehda | 2–2 | Al-Qadsiah |
| Al-Jazeera | 0–6 | Al-Nassr |
| Al-Ahli | 1–0 | Al-Nahda |
Quarter-finals
The Quarter-final matches were held on 5 and 6 April 1984.| Home team | Score | Away team |
| Al-Ettifaq | 0–1 | Al-Hilal |
| Al-Ittihad | 3–0 | Ohod |
| Al-Ahli | 1–0 | Al-Wehda |
| Damac | 2–1 | Al-Nassr |