The Powder Mountain Icefield, also called the Powder Mountain Icecap and the Cayley Icefield, is a glacial field in the Pacific Ranges of southwestern British Columbia, Canada, about 20 kilometres (12 mi) west of Whistler and about 90 kilometres (56 mi) north of Vancouver. On the west side of the icefield is the valley of the Squamish River, while on its east is the Callaghan Valley, which is the setting for the Nordic facilities for the 2010 Winter Olympics.
The icefield is studded by several volcanic formations, including active Mount Cayley. Other summits are Powder Mountain, Brandywine Mountain and Mount Fee. Mount Callaghan, a dormant volcano, is just northeast of the icefield. Mount Brew is just to its south.