The Lang Glacier (German: Langgletscher) is a 6.6 km (4.1 mi) long glacier (2005) situated in the Bernese Alps in the canton of Valais in Switzerland. In 1973 it had an area of 10.1 km² (3.9 sq mi).

• List of glaciers in Switzerland
• List of glaciers
• Retreat of glaciers since 1850
• Swiss Alps

• Swiss glacier monitoring network