1990–91 Algerian Championnat National

The 1990–91 Algerian Championnat National was the 29th season of the Algerian Championnat National since its establishment in 1962. A total of 16 teams contested the league, with JS Kabylie as the defending champions, The Championnat started on August 30, 1990. and ended on october 1, 1991.

Promotion and relegation
Teams promoted from Algerian Division 2 1990-1991
 * NA Hussein Dey
 * ES Guelma

Teams relegated to Algerian Division 2 1991-1992
 * CS Constantine
 * RC Kouba