Quchayuq (Quechua qucha lake, -yuq a suffix, "the one with a lake (or lakes)", also spelled Khochayoj) is a mountain in the Andes of Bolivia which reaches a height of approximately . It is located in the Potosí Department, Nor Chichas Province, Cotagaita Municipality. Quchayuq lies northwest of Achakanayuq.
References Bolivian IGM map 1:50,000 Comunidad Cotagaitilla 6431-IV