Gísla saga Súrssonar (, the saga of Gísli Súrsson) is one of the Sagas of Icelanders. It tells the story of Gisli, a tragic hero who must kill one of his brothers-in-law to avenge another brother-in-law. Gisli is outlawed and forced to stay on the run for thirteen years before he is finally hunted down and killed. Although set in the period 940-980, the saga was most likely written in the 13th century. In 1981 it was made into a film titled Útlaginn (The Outlaw).