Pastoruri Glacier, Glacier in Cordillera Blanca range, Peru

Pastoruri Glacier is a cirque glacier on the north face of Nevado Pastoruri in the Cordillera Blanca, within Huascarán National Park. It begins at 5,201 m and descends to 5,001 m, covering about 1.99 km² with a length of 1.3 km and a width of 2.03 km. Its lower face is pale blue ice with deep vertical crevices, and bands of bare rock and debris lie in front of its retreating snout.

The glacier formed over many centuries through the accumulation of snow at high altitude in this mountain range. Beginning in the early 2000s, it has shrunk noticeably, losing a significant portion of its former size and volume.

Since April 2011, the Huascarán National Park authority (Sernanp) has run a tourist circuit called "La ruta del cambio climático" on the glacier's forefield, where visitors see the abandoned depressions and lateral ponds left by the retreating ice. Park specialists and staff from related institutions give talks on the impact of climate change in the area. The glacier also hosted Peru's only skiing competition.

A walking trail leads up from Huaraz and requires moderate fitness to complete. Tour operators in the city offer guided day trips that bring visitors to the terminal lake situated below the ice field.

Pastoruri once held an ice cave about 40 m long that drew national and foreign visitors; after it melted, a small lagoon formed in its place. The glacier also hosted Peru's only skiing competition. Local glaciologist Benjamín Morales Arnao tested covering the ice with a 15 cm layer of sawdust, keeping four metres of ice on Pastoruri and five on Chaupijanca.