Saint Moritz, a town, or Gemeinde (commune),  Graubünden canton, southeastern Switzerland. Saint Moritz lies in the Oberengadin (Upper Inn Valley) and is surrounded by magnificent Alpine peaks. The town consists of the Dorf (village), the Bad (spa), and the hamlets of Suvretta and Champfèr. Originally known for its curative mineral springs, it became a fashionable spa and summer resort in the 17th century. Since the late 19th century, it has developed as one of the world’s most famous winter-sport centres and was the scene of the Winter Olympic Games in 1928 and 1948. The resort is on an international highway, is linked by rail with international lines, and has an airport at Samedan, just northeast. Saint Moritz depends on tourism and the hotel industry.