Pumacocha (possibly from Quechua puma cougar, puma, qucha lake,) is a lake in Peru located in the Junín Region, Yauli Province, Yauli District. It is situated at a height of approximately , about 5.144 km long and 0.95 km at its widest point. Pumacocha lies northwest of a lake named Huallacocha (possibly from in Quechua Wallaqucha) and southwest of the town of Yauli.
The Pumacocha dam was completed in 1942. It is long and high. It is operated by Centromín Perú. The reservoir has a volume of and a capacity of .
See also List of lakes in Peru
References escale.minedu.gob.pe - UGEL map of the Yauli Province (Junín Region) Recursos Hídricos del Perú en Cifras, Boletín Técnico de Recursos Hídricos 2010, Autoridad Nacional del Agua, Ministerio de Agricultura, Peru