Erling Magnusson Steinvegg or Erlingr Magnússon Steinveggr (died March 1207) was the candidate of the Bagler for the Norwegian throne from 1204 until his death.
He also claimed some years earlier to have been arrested by Swedish King Knut Eriksson and put in the stone tower on the island of Visingsö in Lake Vättern.
Members of the Bagler party became convinced that Erling Steinvegg was a son of King Magnus V of Norway and made him a candidate for the Norwegian throne.
To prove his ancestry, Erling undertook the ordeal in the presence King Valdemar II of Denmark and subsequently received 35 ships as a gift of him.
The main source of information regarding the lives and rebellion of Erling Magnusson Steinvegg and his son Sigurd Ribbung is Sturla Þórðarson's Saga of Håkon Håkonsson which was written in the 1260s.