The 1970–71 Algerian Championnat National was the ninth season of the Algerian Championnat National since its establishment in 1962.
A total of 16 teams contested the league, with CR Belcourt as the defending champions, The Championnat started on September 20, 1970. and ended on April 25, 1971.
Teams promoted from Algerian Division 2 1970-1971 Teams relegated to Algerian Division 2 1971-1972