The Kautz Glacier is a narrow glacier on the southern flank of Mount Rainier in Washington. Named for August Kautz, who is sometimes credited for the first ascent of Mount Rainier, covers 1.8 square miles (4.7 km2) and contains 7.8 billion ft3 (221 million m3) of ice. Upper Kautz Glacier extends south from the summit ice cap to Kautz Ice Cliff at about 11,700 feet (3,600 m).