| Competition: | Algerian Championnat National |
| Season: | 1999–2000 |
| Winners: | CR Belouizdad |
| League Topscorer: | Salim Lotfi Sahraoui (11 goals) |
| Biggest Home Win: | MC Oran 6–0 CA Batna MC Oran 6–0 USM Annaba |
| Biggest Away Win: | ES Sétif 1–4 MC Oran JSM Béjaïa 0–3 MC Oran |
| Highest Scoring: | CR Belouizdad 4–3 MC Oran USM Alger 4–3 USM Annaba |
| Matches: | 132 |
| Total Goals: | 316 |
| Prevseason: | 1998–99 |
| Nextseason: | 2000–01 |
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.
Teams promoted from Algerian Division 2 1999–2000
Teams relegated to Algerian Division 2 2000–2001
| Rank | Scorer | Club | Goals | |
|---|---|---|---|---|
| 1 | Salim Lotfi Sahraoui | MO Constantine | 11 | |
| 2 | Saad Boutaleb | CR Belouizdad | 10 | |
| 3 | Mounir Dob | CA Batna | 10 | |
| 4 | Fares El Aouni | WA Tlemcen | 9 | |
| 5 | Ali Meçabih | MC Oran | 9 | |
| 6 | Billal Zouani | USM Blida | 9 | |
| 7 | Fadel Ryad Settara | CR Belouizdad | 7 | |
| 8 | Ishak Ali Moussa | CR Belouizdad | 7 | |
| 9 | Yacine Amaouche | JSM Béjaïa | 6 | |
| 10 | Hocine Gacemi | JS Kabylie | 6 |