St. Vith (German: Sankt Vith [zaŋkt ˈfɪt]; French: Saint-Vith [sɛ̃ vit] ⓘ; Luxembourgish: Sankt Väit [ˌzɑŋkt ˈvæːɪt]; Walloon: Sint-Vit) is a city and municipality of East Belgium located in the Walloon province of Liège.

The municipality consists of the following sub-municipalities: Sankt Vith, Crombach, Lommersweiler, Recht, and Schönberg.

It was part of the Duchy of Luxemburg then of France until the defeat of French Emperor Napoleon Bonaparte.

St. Vith was transferred to Belgium on March 6, 1925, by the Treaty of Versailles after the defeat of the German Empire in World War I.

An important road and railway junction, St. Vith was fought over in the 1944 Battle of the Bulge during World War II.