The Llanganuco Lakes (Llankanuku in Quechua language), Chinancocha and Orconcocha, are situated in the Cordillera Blanca in the Andes of Peru. They are located in Ancash Region, Yungay Province, Yungay District, about 25 km north-east of Yungay. The lakes are part of Huascarán National Park.
Lake Chinancocha, (possibly from Quechua china female, -n a suffix, qucha lake, "female lake") lies at an altitude of . It is situated southwest of Lake Orconcocha.
Lake Orconcocha (possibly from Quechua urqu male / mountain, "male lake") lies about 1 km away from Chinancocha at the end of the Llanganuco valley.
An extensive earthquake in 1970 caused an avalanche which created a third smaller lake between the two main lakes.