Maria of Vitebsk

Maria of Vitebsk (c. 1300–c. 1346), also called Maria Yaroslavna, was the only child and heir of Yaroslav Vasilkovich, the last prince of Vitebsk. Around 1318 she married Algirdas, a son of Grand Duke Gediminas of Lithuania, and through her inheritance the Principality of Vitebsk passed to the Gediminids.

She bore Algirdas at least five sons, among them Andrei of Polotsk, Dmitry of Bryansk and Constantine, all baptized in the Orthodox rite, and their descendants included several princely houses. After her death Algirdas took as his second wife Uliana of Tver.