The following is the summary of the Swiss National League in the 1947âÂÂ48 football season, both Nationalliga A and Nationalliga B. This was the 51st season of top-tier and the 50th season of second-tier football in Switzerland.
The Swiss Football Association (ASF/SFV) had 28 member clubs at this time which were divided into two divisions of 14 teams each. The teams played a double round-robin to decide their table positions. Two points were awarded for a win and one point was awarded for a draw. The top tier (NLA) was contested by the top 12 teams from the previous season and the two newly promoted teams FC Zürich and FC La Chaux-de-Fonds. The last two teams in the league table at the end of the season were to be relegated.
The second-tier (NLB) was contested by the two teams that had been relegated from the NLA at the end of the last season, these were Urania Genève Sport and BSC Young Boys, the ten teams that had been in third to twelfth position last season and the two newly promoted teams from the 1. Liga FC Chiasso and FC Concordia Basel. The top two teams at the end of the season would be promoted to the 1948âÂÂ49 NLA and the two last placed teams would be relegated to the 1948âÂÂ49 Swiss 1. Liga.
<onlyinclude></onlyinclude> This was Bellinzona's first championship title.
<onlyinclude></onlyinclude>
Urania Genève Sport and FC Chiasso finished the season level on points in joint first position and both achieved promotion to 1948âÂÂ49 Nationalliga A. However, it required a play-off to decide the division championship. The play-off was played on 20 June 1948 at the Letzigrund in Zürich.
Urania Genève Sport won and were NLB champions.