Breheimen is a mountain range in Sogn og Fjordane and Oppland counties in Norway. The area lies west of Jotunheimen (the Sognefjellsvegen road marks the western border), north of the Sognefjord, and south of the Nordfjord and Riksvei 15. The mountain range includes the Jostedalsbreen National Park and the Breheimen National Park.
The name Breheimen means "home of the glaciers", since it has many glaciers, including Norway's largest glacier, Jostedalsbreen. Other glaciers in the range include Harbardsbreen and Spørteggbreen. Some of the major mountains in the area include Skåla, Lodalskåpa, Høgste Breakulen, Tverrådalskyrkja, Hestbreapiggan, and Brenibba. The region also includes several large lakes such as Austdalsvatnet and Styggevatnet.