Ragnvald Sigurdsson (750 – after 814) was a Lord on Huseby in Lista. Harald Granraude was king of Agder. He had 2 children: Gunhild Ragvaldsdatter and Olve Ragnvaldsson. He is most known for marrying his daughter Gunnhild to Harald Granraude, who was killed by Gudrød the Hunter. What happened to Ragvald after is not known. He is also known to be the Great Great Grandfather of Harald Hårfagre.