Hatun Ch'aqu is a mountain in the Andes of Peru, about 5,000 metres (16,404 ft) high. It is located in the Cusco Region, Canchis Province, Pitumarca District, and in the Quispicanchi Province, Cusipata District. It lies south-west of the mountain Ch'aqu, west of the mountain Yanaqaqa, north-west of the mountain Tiklla Q'asa and north of the mountain Tuqtu. Its ridge stretches to the north-west.