| Organising body | Tunisia Basketball Federation |
|---|---|
| Founded | 1956 |
| First season | 1956–57 |
| Country | Tunisia |
| Confederation | FIBA Africa |
| Number of teams | 16 |
| Level on pyramid | 2 |
| Promotion to | Championnat Pro A |
| Relegation to | Championnat Nationale 2 |
| Domestic cup(s) | Tunisian Basketball Cup |
| Current champions | EO La Goulette Kram (1st title) (2022-23) |
| Most championships | Stade Gabèsien (2 titles) |
| Website | ftbb.org.tn |
The Championnat Nationale 1 is the second division of the Tunisian men's basketball system. The league is currently contested by 18 teams and is named the Nationale 1 since 2020.[1] The highest-placed teams are promoted to the Championnat Pro A.