Cayesh, Mountain summit in Ancash Department, Peru

Cayesh is a mountain summit in the Cordillera Blanca range of the Andes, positioned between Huaraz and Huari provinces at an elevation of 5,721 meters. The peak offers technical climbing routes and sits within a massif containing numerous other alpine summits.

In July 2015, Chilean climbers Jimmy Mora and Francisco Rojas opened a new route on the mountain's west face. The peak lies at the head of the Cayesh valley, within the Quebrada de Quilcayhuanca, in the Independencia district of Áncash.

Cayesh takes its name from the Quechua word Kayish, and the peak rises at the head of the Cayesh valley inside the Quebrada de Quilcayhuanca. The approach trail from Huaraz passes the hamlets of Unchus and Llupa and the village of Pitec, where farmers graze livestock on the valley floor below the glacier.

Most climbers start their expedition from Huaraz, where guides, equipment rentals, and accommodations are available before beginning the multi-day climb. Solid physical fitness and prior experience with high-altitude mountaineering are needed to manage the ascent safely.

In July 2015, Chileans Jimmy Mora and Francisco Rojas opened a new route on Cayesh's west face, the only ascent recorded in the sources. The peak rises to about 5,721 m at the head of the Cayesh valley, northwest of Artisa and southeast of Andavite.