Henry X Rumpold, Duke of Żagań also known as the Younger (Polish: Henryk X Rumpold or Młodszy; c. 1390 – 18 January 1423), was a Duke of Żagań-Głogów during 1397–1412 (as co-ruler of his brothers) and since 1412 ruler over Głogów (as co-ruler of his brother).
In 1420, together with his brothers, he participated in the great congress of Wroclaw, where he paid homage to the Emperor.
Also, he took part in expeditions against the Hussites, and shortly after was appointed Governor of the Upper Lusatia.
After the death of his mother, he inherited, together with Henry IX, the towns of Kożuchów and Zielona Góra.
1445), daughter of Duke Bogislaw VIII of Pomerania-Stargard; but he died soon after in a military camp in Flubsberg.