Chad has two official languages, French and literary Arabic, and over 120 indigenous languages. A vernacular version of Arabic, Chadian Arabic, is the lingua franca.
Chadian Sign Language is actually Nigerian Sign Language, a dialect of American Sign Language; Andrew Foster introduced ASL in the 1960s, and Chadian teachers for the deaf train in Nigeria.
- Adamawa languages
- Kim (15,354, RGPH 1993)
- Moundang (160,000, RGPH 1993)
- Toupouri (90,785, RGPH, 1993)
- Bua languages: Bua, Niellim, Gula Iro, etc. (total < 30,000)
(Ethnologue lists 54 Chadic languages in Chad altogether, many of them small.)