Yana Unu (Quechua yana black, unu water, "black water") 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. Yana Unu lies west of a valley named Jatun Q'asa ("big valley"). Its intermittent stream flows to the Caiti River.
References Bolivian IGM map 1:50,000 Comunidad Caiti 6431-III