Maria of Bytom

Maria of Bytom (before 1295–1317) was queen of Hungary as the wife of Charles I Robert and the only daughter of Casimir, Piast duke of Bytom, by Helena. In 1306 she married Charles and was crowned at Székesfehérvár.

The marriage, probably promoted by Władysław I the Elbow-high, drew Hungary and the Silesian Piasts together against Bohemia. The marriage is now considered childless, though older historians gave her two daughters. She died on 15 December 1317.