The National Division (Luxembourgish: Nationaldivisioun, French: Division Nationale, German: Nationaldivision), known as the BGL Ligue for sponsorship reasons, is the highest football league in Luxembourg. Until 2011, it was known as the BGL Ligue, after the Luxembourg Football Federation managed to seal a sponsorship deal with Fortis^{[citation needed]}. Before 2006, it contained twelve teams, but it expanded to fourteen for the 2006–07 season. Following the abandonment of the previous season, the 2020–21 season saw the further expansion of the league to 16 teams. The current champions are Differdange 03.

The competition was first held in 1909–10, and has been held every year since, with the exceptions of 1912–13 and four seasons during the Second World War. It was also abandoned after 17 games in the 2019–20 season due to the COVID-19 pandemic.

The competition was called the Luxembourgish Championship (Luxembourgish: Lëtzebuerger Championnat, French: Championnat Luxembourgeois) until 1913–14. From the 1914–15 season until 1931–32 it was called the Premier Division (Luxembourgish: Éischt Divisioun, French: Première Division). It was then called the Division of Honour (Luxembourgish: Éirendivisioun, French: Division d'Honneur) from 1932–33 to 1956–57. Since the 1957–58 season, the competition has been known as the National Division.

Champions were (team names in French):

Teams in bold are still playing in the National Division. Teams in italics no longer exist.