The 2018–19 Basketligaen was the 44th season of the highest professional basketball tier in Denmark.

Ryan Evans of the Bears was named the season's Most Valuable Player.

After the end of the season, Hørsholm 79ers resigned to its place in the league.

The playoffs were played between the eight teams of the competition, with a best-of-five series in a 1-1-1-1-1 format.

The seeded team played games 1, 3 and 5 at home.