Saint Wenceslas Cathedral (Czech: Katedrála svatého Václava) is a gothic cathedral at Wenceslas Square in Olomouc, in the Czech Republic, founded in 1107.

The square was named after Saint Wenceslaus I, Duke of Bohemia on the thousandth anniversary of his death in 935.

Bohemian king Wenceslaus III of Bohemia was murdered in a nearby house of the former dean of the cathedral on 4 August 1306.

Gothic revival changes, which included refacing the building, rebuilding the west front and the construction of the central tower, were made during 1883–1892.

This article about a church building or other Christian place of worship in the Czech Republic is a stub.