Pirqasqa is a mountain in the Wansu mountain range in the Andes of Peru, about 5,000 metres (16,404 ft) high. It is situated in the Arequipa Region, La Unión Province, in the northern part of the Puyca District. It lies south of Qullpa K'uchu, west of Kunturillu and southeast of Minasniyuq. The little lake east of Pirqasqa is named Pirqasqaqucha (Perjasjacocha).