The 2003–04 Liechtenstein Cup was the fifty-ninth season of Liechtenstein's annual cup competition. Seven clubs competed with a total of sixteen teams for one spot in the first qualifying round of the UEFA Cup. Defending champions were FC Vaduz, who have won the cup continuously since 1998.
| Team 1 | Score | Team 2 |
|---|---|---|
| 23 September 2003 | ||
| FC Vaduz II | 0–1 | FC Triesen III |
| 24 September 2003 | ||
| USV Eschen/Mauren IV | 2–2 (a.e.t.) (2–4 p) |
FC Schaan II |
| FC Triesen II | 0–0 (a.e.t.) (3–4 p) |
USV Eschen/Mauren III |
| Team 1 | Score | Team 2 |
|---|---|---|
| 21 October 2003 | ||
| FC Schaan II | 0–11 | FC Vaduz |
| FC Balzers II | 0–1 | FC Triesen |
| FC Ruggell | 2–4 | USV Eschen/Mauren II |
| 22 October 2003 | ||
| FC Ruggell II | 1–5 | USV Eschen/Mauren |
| FC Triesenberg II | 3–2 | FC Schaan |
| FC Schaan III | 2–5 | FC Triesenberg |
| FC Triesen III | 3–2 | USV Eschen/Mauren III |
| 1 April 2004 | ||
| FC Vaduz II | 0–1 | FC Balzers |
| Team 1 | Score | Team 2 |
|---|---|---|
| 7 April 2004 | ||
| USV Eschen/Mauren II | 2–3 | FC Balzers |
| FC Triesen III | 1–2 | FC Triesenberg |
| 10 April 2004 | ||
| FC Triesenberg II | 0–11 | USV Eschen/Mauren |
| 12 April 2004 | ||
| FC Triesen | 0–9 | FC Vaduz |
| Team 1 | Score | Team 2 |
|---|---|---|
| 5 May 2004 | ||
| FC Triesenberg | 1–2 | FC Balzers |
| 19 May 2004 | ||
| USV Eschen/Mauren | 2–5 | FC Vaduz |
| FC Vaduz | 5–0 | FC Balzers |
|---|---|---|
M. Polverino  30'D. Polverino 31', 79'Pérez 45'Gohouri 73' |
