Paccharaju (possibly from Ancash Quechua paqtsa waterfall, rahu snow mountain, "waterfall snow peak") is a mountain of 5,744 m (18,845 ft) (or 5,749 m (18,862 ft)) of elevation in the Cordillera Blanca in the Andes of Peru. In other maps it is shown as comprising two peaks: Rocotuyo (possibly from Quechua rukutu, ruqutu a plant (Capsicum pubescens), -yuq a suffix to indicate ownership, "the one with the rukutu") of 5,749 m (18,862 ft) and Rayococha (or Bayoraju) of 5,460 m (17,913 ft). It is located between the provinces of Asunción Province and Carhuaz, in Ancash; southwest of mount Tarush Kancha, inside Huascarán National Park.

Rocotuyo (also named Paccharuri) is a lake at 9°16′53″S 77°27′12″W / 9.28139°S 77.45333°W / -9.28139; -77.45333 south of the mountain.