Patarcocha (possibly from Quechua qucha lake,) is a lake in the Cordillera Blanca in the Andes of Peru located in the Ancash Region, Asunción Province, Chacas District. It is situated at a height of , 259 m long and 147 m at its widest point. Patarcocha lies northwest of the lakes Yanacocha, Huegroncocha and Runtococha.