| Algerian Cup | |
| Year: | 2005–06 |
| Champions: | MC Alger (5th title) |
| Runner-Up: | USM Alger |
| Prevseason: | 2004–05 |
| Nextseason: | 2006–07 |
The 2005–06 Algerian Cup was the 42nd edition of the Algerian Cup in the sport of football. MC Alger won the Cup by defeating city rivals USM Alger 2–1 in the final with two goals from Noureddine Daham. It was MC Alger's fifth Algerian Cup in its history and its first in 23 years.
| Tie no | Home team | Score | Away team | |
|---|---|---|---|---|
| 1 | AS Khroub | 0–1 | NA Hussein Dey | |
| 2 | ASM Oran | 1–1 (4-3 p) | MC El Eulma | |
| 3 | CA Bordj Bou Arreridj | 0–1 (a.e.t) | RC Kouba | |
| 4 | MC Alger | 2–0 | CRB Dar El Beida | |
| 5 | CS Constantine | 0–1 | WA Tlemcen | |
| 6 | ES Sétif | 3–1 | US Biskra | |
| 7 | ES Guelma | 0–1 (a.e.t) | JS Kabylie | |
| 8 | USM Alger | 2–0 (a.e.t) | USM Annaba |
| Tie no | Home team | Score | Away team | |
|---|---|---|---|---|
| 1 | ES Sétif | 1–2 | MC Alger | |
| 2 | WA Tlemcen | 2–1 (a.e.t) | ASM Oran | |
| 3 | RC Kouba | 0–0 (1-4 p) | USM Alger | |
| 4 | NA Hussein Dey | 1–1 (2-4 p) | JS Kabylie |
------------
| Tie no | Home team | Score | Away team | |
|---|---|---|---|---|
| 1 | USM Alger | 0–0 (3-2 p) | JS Kabylie | |
| 2 | MC Alger | 3–1 | WA Tlemcen |
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Kickoff times are in local time.