The 1984–85 Algerian Cup is the 23rd edition of the Algerian Cup. MP Oran are the defending champions, having beaten JH Djazaïr 2–1 in the previous season's final.
| كأس الجزائر | |
|---|---|
| Tournament details | |
| Country |  Algeria |
| Defending champions | MP Oran (2) |
| Final positions | |
| Champions | MP Oran (3) |
| Runner-up | CRE Constantine |
| Tournament statistics | |
| Top goal scorer(s) | Benkenida (CREC) (6) Bousri (JSBM) (6) |
Round of 64 edit
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Round of 32 edit
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Round of 16 edit
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Quarter-finals edit
| 30 May 1985 | MP Oran | 1–0 | RS Kouba | Stade 17 juin, Constantine |
| 23:00 | Mecheri  80' |
| 31 May 1985 | JS Bordj Ménaïel | 1–0 | MP Alger | Stade 19 juin 1965, Oran |
| 23:00 | Bousri 29' |
| 31 May 1985 | CRE Constantine | 2–1 | MB Batna | Stade 8 Mai 1945, Sétif |
| 23:00 | Bouzid 19' Benkénida 9' |
Mellala 55' |
| 31 May 1985 | GCR Mascara | 1–1 (a.e.t.) (4–3 p) | IRB Sétif | Stade 20 Août 1955, Algiers |
| 23:00 | Chaabane Larbi 48' |
Belkheir 11' |
Semi-finals edit
| 6 June 1985 | MP Oran | 2–2 (a.e.t.) (3-2 p) | JS Bordj Ménaïel | Stade 5 Juillet 1962, Algiers |
| 00:00 | Benmimoun 46' Mecheri 64' |
Bousri 48' Ferhat 60' |
| 6 June 1985 | CRE Constantine | 1–0 | GCR Mascara | Stade 5 Juillet 1962, Algiers |
| 22:00 | Benkénida 60' |