Heimskringla (Icelandic pronunciation: [ˈheimsˌkʰriŋla]) is the best known of the Old Norwegian kings' sagas. It was written in Old Norse in Iceland. While authorship of Heimskringla is nowhere attributed, some scholars assume it is written by the Icelandic knight, poet and historian, Snorri Sturluson (1178/79–1241) c. 1230. The title Heimskringla was first used in the 17th century, derived from the first two words of one of the manuscripts (kringla heimsins, "the circle of the world").
Heimskringla is a collection of sagas about Swedish and Norwegian kings, beginning with the saga of the legendary Swedish-Norwegian dynasty of the Ynglings, followed by accounts of historical Norwegian rulers from Harald Fairhair of the 9th century up to the death of the pretender Eystein Meyla in 1177.