The 1945–46 1. Liga season was the 14th season of the 1. Liga since its creation in 1931. At this time, the 1. Liga was the third-tier of the Swiss football league system.
Format
There were 33 teams competing in the 1. Liga this season. They were divided into three regional groups, each group with 11 teams. Within each group, the teams would play a double round-robin to decide their league position. Two points were awarded for a win and one point was awarded for a draw. The three group winners then contested a play-off round to decide the two promotion slots to the second-tier (NLB). The last placed team in each group was directly relegated to the 2. Liga (fourth tier). The season started on 9 September 1945, was completed by 23 June 1946 with two of the games in the promotion play-off being held in July.
The following season would see the 1. Liga with the addition of three further clubs, thus the number of teams in each group was to be new twelve teams, therefore six clubs from the 2. Liga (fourth tier) would be promoted this season.
Source: RSSSF Rules for classification: 1) Points; 2) Goal difference within the league, but decider play-off for qualifiers.
Promotion
The three group winners played a single round-robin to decide the overall championship and the two promotion slots. The promotion play-offs were held on 16 June, 21 and 28 July 1946.
^(red) Freiburger Fussballverband (2024). "FC Central Fribourg" (in French). Association fribourgeoise de football. Retrieved 2024-11-16.
^(red) Association neuchâteloise de football (2024). "FC Le Locle" (in French). Association neuchâteloise de football - anf.football.ch. Retrieved 2024-11-16.
^(red) Association cantonale vaudoise de football (2024). "Racing Club Lausanne" (in French). Association cantonale vaudoise de football. Retrieved 2024-11-16.
^(red) Association cantonale vaudoise de football (2024). "FC Renens" (in German). Association cantonale vaudoise de football - acvf.football.ch. Retrieved 2024-11-16.
^(red) Walliser Fussballverband (2024). "FC Sierre" (in French). Walliser Fussballverband avf-wfv.ch. Retrieved 2024-11-16.