The Swiss National Park (Romansh: Parc Naziunal Svizzer; German: Schweizerischer Nationalpark; Italian: Parco Nazionale Svizzero; French: Parc National Suisse) is located in the Western Rhaetian Alps , in eastern Switzerland. It lies within the canton of Graubünden, between Zernez , S-chanf , Scuol , and the Fuorn Pass in the Engadin valley on the border with Italy. Founded in 1914, the Swiss National Park is the oldest national park in the Alps and in Central Europe.

It is part of the worldwide UNESCO Biosphere Reserve and has IUCN category Ia, which is the highest category, signifying a strict nature reserve. Today, the Swiss National Park has an area of 170.3 km2 and is the largest nature reserve in Switzerland.

The Swiss National Park covers various terrains, from relatively low valleys to high peaks.