Chad's population comprises over 200 ethnic groups. The largest by estimated percentage:
| Rank | Group | ~Population % |
|---|---|---|
| 1 | Arabs | 11% |
| 2 | Fulbe (Fulani) | 10.5% |
| 3 | Kanembu | 9.5% |
| 4 | Sara | 8% |
| 5 | Maba | 7.5% |
| 6 | Wadai | 6% |
| 7 | Zaghawa | 5.5% |
| 8 | Bideyat | 5% |
| 9 | Hausa | 4.5% |
| 10 | Massa | 4% |
Arab and Fulbe groups dominate the north and center (Sahelian zone); Sara and related groups prevail in the south (Sudanian zone). Ethnicity intersects with language, religion, and livelihood (nomadic pastoralism vs. sedentary farming).