The Mam are an Indigenous Maya people in the western highlands of Guatemala and in south-western Mexico who speak the Mam language.
Most Mam (617,171) live in Guatemala, in the departments of Huehuetenango, San Marcos, and Quetzaltenango. The Mam people in Mexico (23,632) live principally in the Soconusco region of Chiapas.
Chicomuceltec (also Chikomuselteko or Chicomucelteco; archaically, Cotoque) is a Mayan language formerly spoken in the region defined by the municipios of Chicomuselo, Mazapa de Madero, and Amatenango de la Frontera in Chiapas, Mexico, as well as some nearby areas of Guatemala. By the 1970sā80s it had become extinct, with recent reports in Mayanist literature finding that there are no living native speakers. Communities of contemporary Chicomucelteco descendants, numbering approximately 1500 people in Mexico and 100 in Guatemala are Spanish speakers.
Chicomuceltec was formerly sometimes called Cakchiquel Mam, although it is only distantly related to the Cakchiquel or Mam, being much closer to Wastek (Huastec).