Mary of Hungary (in Hungarian and Slovak: Mária) was the daughter of Louis I the Great of Hungary.
Mary acceded to the throne in 1382.
Her father had arranged that Sigismund of Luxembourg would marry one of the his daughters (Hedwig, who became Queen Jadwiga of Poland and Queen Mary of Hungary.)
She was married to Sigismund and she died either in 1392 or 1395. In 1410 (after her death) Sigismund was elected Holy Roman Emperor.