Wenceslaus III may refer to:
- Wenceslaus III of Oława (1400–23), Duke of Oława (1419/20–23)
- Wenceslaus III, Duke of Rybnik (c. 1442 – 1479)
- Wenceslaus III Adam, Duke of Cieszyn (1524–1579), Duke of Cieszyn (1528–79)
- Wenceslaus III of Bohemia (1289–1306), King of Hungary (1301–05), King of Bohemia and of Poland (1305–06)
Topics referred to by the same termThis disambiguation page lists articles about people with the same name. If an internal link led you here, you may wish to change the link to point directly to the intended article. Category: