Mocho’ or Mototzintleco is a language belonging to the western branch of Mayan languages spoken in the Mexican state of Chiapas. Mocho' speakers refer to their own language as qatô:k (spelled "Cotoque" in some older sources), which means 'our language' (Palosaari 2011:4).
Mocho is a moribund language with less than 30 fluent speakers as of 2011 (Palosaari 2011). All speakers are over the age of 70. As of 2009, there are fewer than 5 speakers of Tuzanteco, a closely related language variety.
The two dialects of Mocho' are spoken in two different villages: the Tuzantec dialect in Tuzantán (a town near Huixtla, Chiapas), and the Motozintlec dialect in Motozintla de Mendoza. Historically, the two groups descend from a single population living in the region of Belisario Dominguez about 500 years ago. According to local legend, the split and migration was caused by a plague of bats. Speakers have also been reported in the nearby towns of Tolimán, Buenos Aires, and Campana. Palosaari (2011) describes the Motozintlec dialect.