1999–2000 Algerian Championnat National

The 1999–2000 Algerian Championnat National was the 38th season of the Algerian Championnat National since its establishment in 1962. A total of 12 teams contested the league, with MC Alger as the defending champions, The Championnat started on 14 October, 1999. and ended on 15 June, 2000.

Promotion and relegation
Teams promoted from Algerian Division 2 1999–2000
 * ASM Oran
 * AS Aïn M'lila
 * USM El Harrach
 * CS Constantine

Teams relegated to Algerian Division 2 2000–2001
 * No relegated