Wenceslaus III was King of Hungary and Croatia between 1301 and 1305, and King of Bohemia and Poland from 1305. He was the son of Wenceslaus II, King of Bohemia, who was later also crowned king of Poland, and Judith of Habsburg. Still a child, Wenceslaus was betrothed to Elizabeth, the sole daughter of Andrew III of Hungary. After Andrew III's death in early 1301, the majority of the Hungarian lords and prelates elected Wenceslaus king, although Pope Boniface VIII supported another claimant, Charles Robert, a member of the royal house of the Kingdom of Naples.

Wenceslaus II Přemyslid was King of Bohemia (1278–1305), Duke of Cracow (1291–1305), and King of Poland (1296–1305).