Grasshopper Glacier is in the Beartooth Mountains, Custer National Forest, Montana, U.S. The glacier is within the Absaroka-Beartooth Wilderness, a part of the Greater Yellowstone Ecosystem. Grasshopper Glacier is approximately 0.20 miles long and 0.25 mi wide. Starting at a point more than 11,300 feet above sea level, the glacier originally was more than 5 mi long but has receded significantly since first researched in the early 20th century.