Replacing Dijon and Nîmes (both relegated after two years in second tier) and Niort (relegated after eleven years in second tier).

Due to the restructuring of the French football leagues, this season was the last with 20 teams as its number was reduced to 18 teams the following season.

A promotion play-off competition is held at the end of the season, involving the 3rd, 4th and 5th-placed teams in 2023–24 Ligue 2, and the 16th-placed team in 2023–24 Ligue 1.

[28] Quarter-final Semi-final Promotion Play-off Final1st leg 2nd leg Saint-Étienne won 4–3 on aggregate and were promoted to Ligue 1, while Metz were relegated to Ligue 2.

AS Saint-Étienne drew the highest average home attendance in the 2023-24 edition of the Ligue 2.