2002–03 Nationalliga A
| Season | 2002–03 |
|---|---|
| Champions | Grasshopper Club 27th title |
| Relegated | Luzern Delémont |
| Champions League | Grasshopper Club |
| UEFA Cup | Basel Neuchâtel Xamax Young Boys |
| Top goalscorer | Richard Núñez (27 goals) |
← 2001–02 2003–04 → | |
The 2002–03 season of the Swiss Nationalliga contained two divisions, each with twelve clubs. The top tier was called Nationalliga A (NLA) (French: Ligue Nationale A, Italian: Lega Nazionale A) and the second tier was named Nationalliga B (NLB).