The Allalin Glacier (German: Allalingletscher) is a 6 km (3.7 mi) long glacier (2005) situated in the Pennine Alps near the Allalinhorn in the canton of Valais in Switzerland. In 1973 it had an area of 9.9 km² (3.8 sq mi). The glacier is bordered on the west by the Allalinhorn, Rimpfischhorn and Strahlhorn.