The Fedchenko Glacier () is a large glacier in the Yazgulem Range, Pamir Mountains, of north-central Gorno-Badakhshan province, Tajikistan. The glacier is long and narrow, currently extending for and covering over . It is the longest glacier in the world outside of the polar regions. The maximum thickness of the glacier is , and the volume of the Fedchenko and its dozens of tributaries is estimated at —about a third the volume of Lake Erie.