Euphemia of Hungary was a daughter of King Béla I of Hungary and his wife, Richesa (or Adelaide) of Poland (1050s – 11 April 1111). She was the wife of Duke Otto I of Olomouc. Otto married Euphemia before 1073.
- Kristó, Gyula; Makk, Ferenc (1996). Az Árpád-ház uralkodói [=Rulers of the House of Árpád] (in Hungarian). I.P.C. Könyvek. ISBN 963-7930-97-3.
- Wolverton, Lisa (2001). Hastening towards Prague: Power and Society in the Medieval Czech Lands. University of Pennsylvania Press. ISBN 0-8122-3613-0.