Ubbe, Ubba or Hubba Ragnarsson was a Norse leader during the Viking Age. Ubbe Ragnarsson was one of the sons of Ragnar Lodbrok and, along with his brothers Halfdan and Ivar the Boneless, a leader of the Great Heathen Army. Little is known about Ubbe Ragnarsson. The information that is available about him is written principally in the Anglo-Saxon Chronicle.