The 1986–87 Algerian Cup is the 25th edition of the Algerian Cup. JE Tizi Ouzou are the defending champions, having beaten WKF Collo 1–0 in the previous season's final.
| كأس الجزائر | |
|---|---|
| Tournament details | |
| Country |  Algeria |
| Defending champions | JE Tizi Ouzou () |
| Final positions | |
| Champions | USM El Harrach (1) |
| Runner-up | JS Bordj Ménaïel |
Round of 64
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Round of 32
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Round of 16
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Quarter-finals
edit| 22 April 1987 | ES Guelma | 0 – 0 (a.e.t.) | USM Annaba | Stade 5 Juillet 1962, Algiers |
| 22 April 1987 | JS Bordj Ménaïel | 2 – 1 | USM Aïn Beïda |
| 22 April 1987 | CS Constantine | 1 – 1 (a.e.t.) (8 – 7 p) | ASO Chlef |
| 22 April 1987 | USM El Harrach | 2 – 1 | CR Belcourt |
Semi-finals
edit| 29 April 1987 | USM El Harrach | 1 – 0 | ES Guelma |
| 29 April 1987 | JS Bordj Ménaïel | 1 – 0 | CS Constantine |