The 1969–70 Algerian Championnat National was the eighth 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 october 5, 1969. and ended on May 10, 1970.
Teams promoted from Algerian Division 2 1969-1970 Teams relegated to Algerian Division 2 1970-1971