Lenzerheide (Romansh: Lai) is a mountain resort in the canton of Graubünden, Switzerland at the foot of the Parpaner Rothorn . The village lies in the municipality Vaz/Obervaz in the district of Albula, sub-district Alvaschein.

The village lies in a broadened section of the valley between the cantonal capital Chur to the north and Tiefencastel , beyond which are the Julier Pass and St Moritz. The high valley forms a pass of no official name, often referred to as Lenzerheide pass, with a culmination point located 5 km north of the village.

Lenzerheide is popular as skiing resort and for its lake (Heidsee ), which is frozen in winter. The Lenzerheide Bergbahnen offers access to the skiing areas of Stätzerhorn, Danis, Scalottas, and Rothorn.