The 2023–24 Swiss Promotion League season (known as the Hoval Promotion League for sponsorship reasons) was the 12th edition (10th under its current name) of the 3rd tier of the Swiss football league system under its current format.
The eighteen teams of the previous season are joined by Servette FC II, SR Delémont, FC Paradiso and FC Lugano II, who were promoted from the 1. Liga Classic and no team relegated from the Challenge League, replaced last season's runner-up and third place Stade Nyonnais and FC Baden. Furthermore, the number of under-21 teams allowed in the Promotion League is no longer restricted to four, starting with this season. This season features seven U21 teams.
The season started on 5 August 2023 and the final matchday was on 25 May 2024.