Rögnvaldsson
Rögnvaldsson is a surname. Notable people with the surname include:
- Echmarcach Rognvaldsson, dominant figure in the eleventh-century Irish Sea region
- Eiríkur Rögnvaldsson, Icelandic linguist, professor of Icelandic at the University of Iceland
- Guðrøðr Rǫgnvaldsson, AKA Guðrøðr Dond, ruler of the Kingdom of the Isles
- Hallad Rognvaldsson, Norse jarl ruling the archipelagos of Orkney and Shetland
- Jón Rögnvaldsson, alleged Icelandic sorcerer
- Petur Rognvaldsson, Icelandic-born athlete and actor
- Robert Rognvaldsson, Viking who became the first ruler of Normandy