| Country: | Switzerland |
| Season: | 1969–70 |
| Division1: | Nationalliga A |
| Champions1: | Basel |
| Division2: | Nationalliga B |
| Champions2: | Sion |
| Division3: | 1. Liga |
| Champions3: | 1. Liga champions: Vevey-Sports Group West: Vevey-Sports Group Central: SR Delémont Group South and East: FC Baden |
| Domestic: | Swiss Cup |
| Dchampions: | Zürich |
| Prevseason: | 1968–69 |
| Nextseason: | 1970–71 |
| Flagicon: | yes |
The following is a summary of the 1969–70 season of competitive football in Switzerland.
See main article: 1969–70 Nationalliga A.
The three group winners played a two legged tie against one of the runners-up to decide the finalists. The games were played on 7 and 14 June 1970.
FC Monthey won 7–1 on aggregate and continued to the finals. FC Baden remain in the division. SC Buochs won 6–4 on aggregate and continued to the finals. SR Delémont qualified for finals as lucky loser Vevey-Sports won 6–3 on aggregate and continued to the finals. FC Moutier remain in the division.
The matches were played on 21 and 28 June. Vevey-Sports declaired 1. Liga champions and were promoted to 1970–71 Nationalliga B.
This took place on 5 July at Stadion Neufeld in Bern FC Monthey won and were promoted to 1970–71 Nationalliga B. SR Delémont remain in the division.
The play-outs took place on 21 June. ES FC Malley won and continued in the final. US Campagnes GE were relegated directly to 2. Liga Interregional. FC Concordia Basel continued in the final. SCI Juventus Zürich were directly relegated to 2. Liga Interregional.
The final took place on 28 June 1970. FC Concordia Basel remain in the division. ES FC Malley were relegated to 2. Liga Interregional.
The competition was played in a knockout system. In the case of a draw, extra time was played. If the teams were still level after extra time, the match was replayed at the away team's ground. Here, in case of a draw after extra time, the replay was to be decided with a penalty shoot-out. This season would enclude a first test with two legged quarter- and semi-finals. The final was held in the Wankdorf Stadium in Bern.
The routes of the finalists to the final were:
--------Zürich won 4–1 after extra time.
See main article: 1969–70 European Cup.
Celtic won 2–0 on aggregate.
See main article: 1969–70 European Cup Winners' Cup.
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See main article: 1969 Intertoto Cup.
See main article: 1969 Intertoto Cup.
See main article: 1969 Intertoto Cup.
See main article: 1969 Intertoto Cup.
See main article: 1969 Intertoto Cup.