Tacaná is a municipality in the Guatemalan department of San Marcos.

Tacana is a Western Tacanan language spoken by some 1,800 Tacana people in Bolivia out of an ethnic population of 5,000. They live in the forest along the Beni and Madre de Dios rivers. Numerous dialects, now extinct, have been attributed to Tacana: Ayaychuna, Babayana, Chiliuvo, Chivamona, Idiama (Ixiama), Pamaino, Pasaramona, Saparuna, Siliama, Tumupasa (Maracani, "Tupamasa"), Uchupiamona, Yabaypura, and Yubamona (Mason 1950).