Challwayuq (Quechua challwa fish, -yuq a suffix,[3] "the one with fish", also spelled Chalhuayoc) is a mountain in the Andes of Peru whose summit reaches about 4,800 m (15,748 ft) above sea level.

It is located in the Pasco Region, Daniel Alcides Carrión Province, Yanahuanca District.

Challwayuq lies northwest of Yana Chaka.

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