Dessel Sport
Royal Knokke
KVV Thes Sport
Tienen
KSK Heist
Hoogstraten VV
Excelsior Virton
ROC Charleroi
Sint-Eloois-Winkel
URSL Vise
UR Namur
RFC Liege
Rupel Boom FC
Sporting Hasselt
Tubize
Patro Eisden Maasmechelen
Royal Cappellen
FCV Dender EH
K Lyra-Lierse Berlaar
Cercle Brugge Reserves
KFC Merelbeke
Union Rochefortoise
Deinze
RAAL La Louviere
Lierse Kempenzonen
UR La Louvière Centre
Seraing United
Francs Borains
RFC Tournai
RUS Binche
Diegem Sport
KVC Houtvenne
KVV Zelzate
RSC Habay
Crossing Schaerbeek
RFC Meux
Eendracht Aalst
RWD Molenbeek
ASV Geel
Chatelet SC
KFC VW Hamme
KSV Oudenaarde
Lommel
KFCO Beerschot Wilrijk
Berchem Sport
Sprimont Comblain
K. Berchem Sport
Geel-Meerhout
KVV Coxyde
White Star
The Belgian Division 1 is a semi-professional division and the third-highest division in the Belgian football league system, one level below the Challenger Pro League. It was created by the Royal Belgian Football Association in 2016, coming in at the third level and pushing all divisions one level down. Initially it was known as the Belgian First Amateur Division, but due to the negative connotation of the word amateur the league was renamed to Belgian National Division 1 from the 2019–20 season onwards. Then, from the 2024–25 season, a split was made into two separate divisions, with the teams holding a Flemish license and those playing with a Francophone license now playing in separate divisions within the league. The Flemish division consists of 16 teams and is referred to as the Eerste Afdeling VV, the Francophone division only contains 12 teams and is called Division 1 ACFF.
The Belgian First Amateur Division was created in 2016 following an overhaul of the Belgian football league system which saw the number of professional clubs reduced to 24. As a result, from the third level and below only amateur clubs remain. The two remaining levels above the Belgian Provincial leagues were reformed into three amateur levels, namely the Belgian First Amateur Division, the Belgian Second Amateur Division and the Belgian Third Amateur Division. As a result, the Belgian Provincial Leagues dropped to the sixth level of the league system.
In 2020, the levels were renamed to Belgian National Division 1, Belgian Division 2 and Belgian Division 3 respectively.
In 2022–23, the league was temporarily expanded to 20 teams but reduced again to 18 teams from 2023–24.
From the 2024–25 season, the league was expanded to 28 teams but split into two separate divisions of 16 (Flemish) and 12 (Francophone) teams.