| Season: | 1983–84 |
| Competition: | Nationalliga A |
| Winners: | Grasshopper Club (20th title) |
| Relegated: | Bellinzona Chiasso |
| League Topscorer: | Georges Bregy (Sion) 21 goals |
| Prevseason: | 1982–83 |
| Nextseason: | 1984–85 |
| Season: | 1983–84 |
| Competition: | Nationalliga B |
| Winners: | SC Zug |
| Promoted: | SC Zug FC Winterthur |
| Relegated: | FC Fribourg FC Nordstern Basel FC Red Star Zürich |
| League Topscorer: | Martin Wiggemansen (Lugano) 19 goals |
| Prevseason: | 1982–83 |
| Nextseason: | 1984–85 |
Statistics of the Swiss National League in the 1983–84 football season, both Nationalliga A and Nationalliga B. This was the 87th season of top-tier and the 86th season of second-tier football in Switzerland.
There were 32 member clubs in the Swiss Football Association (ASF/SFV), divided into two tiers of 16 teams each. The top tier was named Nationalliga A (NLA) and the second tier was named Nationalliga B (NLB). In both divisions the teams played a double round-robin to decide their table positions. The Swiss champions would qualify for the 1984–85 European Cup, the runners-up and third placed team would qualify for the 1984–85 UEFA Cup. The last two placed teams in the NLA were relegated to the NLB for the following season. The top two placed teams in the NLB would be promoted to the top tier. The last three teams in the NLB were relegated to next season's 1. Liga.[1]
The first round was played on 9 August 1983. There was to be a winter break between 27 November and 25 February 1984. The season was completed on 6 June 1984. Because the top two teams finished level on points, a championship play-off match was required and this took place on 15 June at the Wankdorf Stadium in Bern.
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The first round was played on 9 August 1983. There was to be a winter break between 27 November and 25 February 1984. The season was completed on 6 June 1984. Because two teams finished level on points in 13th and 14th position, a relegation play-out match was required and this took place on 15 June at the Olympique de la Pontaise in Lausanne.
| Team | Town | Stadium | Capacity | |
|---|---|---|---|---|
| FC Baden | Baden | Esp Stadium | ||
| FC Biel-Bienne | Biel/Bienne | Stadion Gurzelen | ||
| FC Bulle | Bulle | Stade de Bouleyres | ||
| CS Chênois | Thônex | Stade des Trois-Chêne | ||
| FC Fribourg | Fribourg | Stade Universitaire | ||
| FC Grenchen | Grenchen | Stadium Brühl | ||
| FC Laufen | Laufen | Sportplatz Nau | ||
| FC Locarno | Locarno | |||
| Lugano | Lugano | Cornaredo Stadium | ||
| FC Martigny-Sports | Martigny | Stade d'Octodure | ||
| Mendrisiostar | Mendrisio | Centro Sportivo Comunale | ||
| FC Monthey | Monthey | Stade Philippe Pottier | ||
| FC Nordstern Basel | Basel | Rankhof | ||
| FC Red Star Zürich | Zürich | Allmend Brunau | ||
| FC Winterthur | Winterthur | Schützenwiese | ||
| Zug | Zug | Herti Allmend Stadion | ||
The decider was played on 15 June in Olympique de la Pontaise, Lausanne. FC Monthey win after penalty shoot-out and remain in division. FC Fribourg were relegated to 1984–85 Swiss 1. Liga.