Rǫgnvaldr of Orkney was a Norse nobleman and ruler in the 11th century, known for his role as the Earl of Orkney. He was a member of the House of Knýtlinga, which was connected to the Danish royal family. Rǫgnvaldr's reign was marked by his efforts to consolidate power in the Orkney Islands and his involvement in the politics of Scotland and Norway. He is often remembered for his military campaigns and alliances, which were typical of the era. Rǫgnvaldr's legacy includes his contributions to the Viking Age and the cultural exchanges between the Norse and the Celtic peoples of the British Isles. His life reflects the complexities of Norse leadership during a time of significant change in Northern Europe.