The 2004–05 Algerian Cup was the 41st edition of the Algerian Cup. ASO Chlef won the Cup by defeating USM Sétif 1–0 in the final with a goal from Mohamed Messaoud in the 95th minute. It was ASO Chlef's first Algerian Cup in the club's history, as well as its first national title.
| Coupe d'Algerie | |
|---|---|
| Tournament details | |
| Country |  Algeria |
| Final positions | |
| Champions | ASO Chlef (1st title) |
| Runner-up | USM Sétif |
Round of 16 edit
| Tie no | Home team | Score | Away team |
|---|---|---|---|
| 1 | MC Alger | 2–1 | CS Constantine |
| 2 | JSC Sig | 0–1 | USM Annaba |
| 3 | A Bou Saâda | 1–1 (2-3 p) | USM Blida |
| 4 | WA Tlemcen | 3–1 | MC El Eulma |
| 5 | ES Berrouaghia | 1–2 | OMR El Annasser |
| 6 | USM Sétif | 2–1 | Hamra Annaba |
| 7 | ASM Oran | 1–2 | MC Oran |
| 8 | US Chaouia | 1–1 (5-6 p) | ASO Chlef |
Quarter-finals edit
| Tie no | Home team | Score | Away team |
|---|---|---|---|
| 1 | MC Alger | 1–2 | ASO Chlef |
| 2 | USM Sétif | 1–0 (a.e.t) | USM Blida |
| 3 | WA Tlemcen | 1–0 | OMR El Annasser |
| 4 | USM Annaba | 1–0 | MC Oran |
Semi-finals edit
| Tie no | Home team | Score | Away team |
|---|---|---|---|
| 1 | USM Sétif | 0–0 (7-6 p) | WA Tlemcen |
| 2 | ASO Chlef | 3–0 | USM Annaba |
Final edit
| Home team | Score | Away team |
|---|---|---|
| ASO Chlef | 1–0 (a) | USM Sétif |
| ASO Chlef | 1–0 (a.e.t) | USM Sétif |
|---|---|---|
Mohamed Messaoud  95' |
Report |
Champions edit
| Algerian Cup 2004–05 Winners |
|---|
|
| ASO Chlef 1st Title |