2006–07 Swiss 1. Liga

The '''2006–07 Swiss 1. Liga''' was the 75th season of this league and, at this time, was the third tier of the Swiss football league system. The 1. Liga was the highest level of amateur football, although a number of teams had professional or semi-professional players in their ranks.

Format
There were 48 teams in this division this season, including eight U-21 teams which were the eldest youth teams of the professional clubs in the Super League and the Challenge League. The 1. Liga was divided into three regional groups, each with 16 teams. Within each group, the teams would play a double round-robin to decide their positions in the league. The three groups winners and three runners-up, together with the two best third placed teams, then contested a play-off for the two promotion slots. The U-21 teams were not eligible for promotion and could not compete the play-offs. The two last placed teams in each group was relegated to the 2. Liga Interregional.

Qualification round
Aggregate 3–3, Cham win on away goals

Urania win 5–4 on aggregate

Gossau win 4–2 on aggregate

Biel-Bienne win 2–1 on aggregate

Final round
Cham win 3–2 on aggregate

Gossau win 6–2 on aggregate

SC Cham and FC Gossau are promoted in Challenge League.

Summary
Group 1 champions were Étoile Carouge and runners-up were Urania Genève Sport. Group 2 champions were Basel U-21, but they were not eligible to the play-offs, this right was passed down to second and third placed Biel-Bienne and FC Solothurn. Group 3 champions were Red Star Zürich. Runners-up were Zürich U-21, but too they were not eligible to the play-offs and this right was passed down to second placed FC Gossau. The best two third placed teams were Stade Nyonnais from group 1 and SC Cham from group 2. In the play-offs Cham and Gossau achieved promotion to the Challenge League.

From group 1 Martigny and Chênois were relegated. From group 2 Dornach and Kickers Luzern suffered relegation and from group 3 Seefeld and Chur suffered relegation too. The reamining teams in the division were to be joined in next season by FC Savièse, SV Lyss, FC Küsnacht, SV Schaffhausen, FC Schötz and BSC Old Boys, these beings the five 2. Liga Interregional group winners and by the best placed runners-up. They were also joined by FC Baulmes and SC YF Juventus who had just suffered relegation after the 2003–04 Challenge League.