Lamplugh Glacier is an 8-mile-long (13 km) glacier located in Glacier Bay National Park and Preserve in the U.S. state of Alaska. It leads north to its 1961 terminus in Johns Hopkins Inlet, 1.4 miles (2.3 km) west of Ptarmigan Creek and 76 miles (122 km) northwest of Hoonah. The glacier was named by Lawrence Martin of the U.S.