The Coupe de France 1977–78 was its 61st edition. It was won by Nancy which defeated OGC Nice in the Final.
| Tournament details | |
|---|---|
| Country |  France |
Round of 16 edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| Stade de Reims (D1) | 1–3 | SC Bastia (D1) | 0–1 | 1–2 |
| FC Metz (D1) | 0–5 | OGC Nice (D1) | 0–2 | 0–3 |
| Olympique de Marseille (D1) | 3–0 | Girondins de Bordeaux (D1) | 1–0 | 2–0 |
| Nancy (D1) | 3–1 | FC Martigues (D2) | 2–0 | 1–1 |
| Lille OSC (D2) | 3–4 | AS Monaco (D1) | 1–1 | 2–3 |
| AS Angoulême (D2) | 0–1 | FC Sochaux-Montbéliard (D1) | 0–0 | 0–1 |
| FC Nantes (D1) | 7–0 | USL Dunkerque (D2) | 2–0 | 5–0 |
| Gazélec Ajaccio (D2) | 4–6 | US Valenciennes (D1) | 4–1 | 0–5 |
Quarter-finals edit
| Team 1 | Agg. | Team 2 | 1st leg | 2nd leg |
|---|---|---|---|---|
| OGC Nice (D1) | 4–2 | FC Nantes (D1) | 4–1 | 0–1 |
| FC Sochaux-Montbéliard (D1) | 1–0 | Olympique de Marseille (D1) | 0–0 | 1–0 |
| US Valenciennes (D1) | 0–3 | Nancy (D1) | 0–0 | 0–3 |
| SC Bastia (D1) | 2–3 | AS Monaco (D1) | 2–1 | 0–2 |
Semi-finals edit
First leg edit
Second leg edit
Nancy won 5–1 on aggregate.
Nice won 2–1 on aggregate.