S-Chanf is a municipality of the Upper Engadin valley, in the canton of Grisons, Switzerland.

The Engadin or Engadine (German: Engadin, Romansch: Engiadina) is a long mountain valley located in the canton of Graubünden in southeast of Switzerland. It follows the route of the Inn River from its headwaters at Maloja Pass running northeast until the Inn flows into Austria one hundred kilometers downstream. The Engadin is protected by high mountains on all sides and is famous for its sunny climate, beautiful landscapes and outdoor activities.