Constance of Hungary (Hungarian: Magyarországi Konstancia, Ukrainian: Констанція Угорська) (c. 1237–1302), was a Queen consort of Galicia and a Grand Princess of Kiev by marriage to Leo I of Galicia, Grand Prince of Kiev (r.

[1] She was the daughter of Béla IV of Hungary and Maria Laskarina.

Constance's sisters were St. Kunegunda, married to the Kraków-Sandomir prince Boleslaw V the Chaste, Bl.

Yolanda of Poland, married to Prince Bolesław the Pious of Kalisz, Anna of Hungary, married to the eternal rival of the Romanovychs [uk] for the Galician throne, Ban of Machva and Slavonia Rostislav Mikhailovich, Elizabeth of Hungary, married to Duke of Bavaria Henry XIII Wittelsbach, St. Margaret of Hungary, who lived a religious life since her birth.

She is a descendant of the Grand Dukes of Kiev Vladimir II Monomakh and Yaroslav the Wise.