2024–25 Belgian National Division 1

The 2024–25 Belgian National Division 1 will be the ninth season of the third-tier football league. This is first season was split into two groups VV and ACFF.

Out

 * RAAL La Louvière were promoted to the Challenger Pro League as champions.
 * Lokeren-Temse were promoted to the Challenger Pro League as runners-up.
 * Sint-Eloois-Winkel folded at the end of last season.
 * Visé was refused a license and forced to relegate.

In

 * SL16 FC were relegated from the Challenger Pro League.
 * Belisia Bilzen and Mons as champions in the VV B and ACFF divisions of the Belgian Division 2.
 * Ninove was automatically promoted as runners-up of the VV A division of the Belgian Division 2 as champions Eendracht Aalst had been refused a license.
 * On VV-side, four teams were promoted via the Promotion play-offs VV: Jong Cercle, Hasselt, Lyra-Lierse Berlaar and Merelbeke.
 * On ACFF-side, all four teams taking part in the Promotion play-offs ACFF were promoted: Binche, Rochefort, Tournai and Tubize-Braine.
 * Furthermore, two more spots were available on ACFF side, awarded to highest eligible finishers Stockay and Union SG B.

Format changes
Expanding regionalization to all of amateur football for this season saw the league's twenty-eight teams split into two groups:
 * VV consisting of sixteen teams
 * ACFF consisting of twelve teams