| Competition: | Swiss Promotion League |
| Season: | 2018–2019 |
| Winners: | Stade Lausanne Ouchy |
| Promoted: | Stade Lausanne Ouchy |
| Relegated: | La Chaux-de-Fonds Wohlen |
| Matches: | 240 |
| Total Goals: | 723 |
| Prevseason: | 2017–18 |
| Nextseason: | 2019–20 |
The 2018–19 Promotion League season is the 7th edition (the 5th since its name change).[1] The Promotion League is the third highest level in the Swiss football league system, behind the Super League and the Challenge League.
The Championship was played by 16 teams, three of which were U-21 teams, and each team played 30 games in a double round robin. The championship winner would win promotion and the two bottom placed teams would be relegated. In the previous season SC Kriens had become division champions and had won promotion. FC United Zürich had ended the season in last position and were relegated and although FC La Chaux-de-Fonds had ended in second last position they held class, because BSC Old Boys Basel voluntarily relegated. Therefore, the 2018–19 season saw three new clubs join the division, AC Bellinzona and FC Münsingen had both been promoted from the 1. Liga Classic and FC Wohlen joined after suffering relegation from the 2017–18 Swiss Challenge League.
| Club | Canton | Stadium | Capacity | 2017-2018 season results |
|---|---|---|---|---|
| FC Wohlen | Aargau | Stadion Niedermatten | Relegated from 2017–18 Swiss Challenge League | |
| FC Stade Nyonnais | Vaud | Stade de Colovray | 2nd | |
| Yverdon-Sport | Vaud | Stade Municipal | 3rd | |
| FC Basel U-21 | Basel-City | Stadion Rankhof | 4th | |
| Lausanne-Ouchy | Vaud | Centre sportif de Vidy | 5th | |
| FC Zürich U-21 | Zürich | Sportplatz Heerenschürli | 6th | |
| FC Köniz | Bern | Liebefeld | 7th | |
| SC Brühl | St. Gallen | Paul-Grüninger-Stadion | 8th | |
| FC Breitenrain Bern | Bern | Spitalacker | 9th | |
| FC Sion U-21 | Valais | Stade de Tourbillon | 10th | |
| SC Cham | Zug | Stadion Eizmoos | 11th | |
| SC YF Juventus | Zürich | Utogrund | 12th | |
| FC Bavois | Vaud | Terrain des Peupliers | 13th | |
| FC La Chaux-de-Fonds | Neuchâtel | Stade de la Charrière | 15th | |
| AC Bellinzona | Ticino | Stadio Comunale Bellinzona | Promoted from 1. Liga | |
| FC Münsingen | Bern | Sportanlage Sandreutenen | Promoted from 1. Liga | |