The Sudetes /suːˈdiːtiːz/ are a mountain range in Central Europe, also known in English (from their names in German and Czech/Polish) as the Sudeten or Sudety mountains.

The range stretches from eastern Germany along the northern border of the Czech Republic to south-western Poland. The highest peak of the range is Sněžka (Polish:Śnieżka) in the Krkonoše (Polish: Karkonosze) mountains on the Czech Republic–Poland border, which is 1,603 metres (5,259 ft) in elevation. The current geomorphological unit in the Czech part of the mountain range is Krkonošsko-jesenická subprovincie ("Krkonoše-Jeseníky").