Allsherjargoði (Icelandic pronunciation: [ˈalsˌhɛrjarˌkɔði], All-Warring Chieftain) was an office in the Icelandic Commonwealth, held by the goði who held the goðorð of the descendants of Ingólfr Arnarson, the first settler of Iceland. The role of the allsherjargoði was to sanctify the Althing as it began every year.
Þorsteinn Ingólfsson, son of Ingólfr Arnarson, was a goði when the Althing was founded in 930 and became the first allsherjargoði. His son, Þorkell máni Þorsteinsson, inherited the office ca. 945 while at the same time being lawspeaker. He was succeeded by his son Þormóðr Þorkelsson, who held office from 984 to 1020. His son, Hamall Þormóðsson held office until 1055. Hamall had three sons, Þormóðr, Torfi and Már but it is not known who of the three inherited the office and for the following century it is not known who held the office. In 1160, Guðmundr gríss Ámundason, presumably a descendant of Hamall, was in office as allsherjargoði. He held the office until his death in 1197 when his son, Magnús góði Guðmundarson, took over. Magnús held office until 1234. He had no sons and it is unknown who inherited the office after this. One theory holds that Árni óreiða Magnússon, nephew of Guðmundr gríss and son-in-law of Snorri Sturluson, inherited the office and became the last allsherjargoði. The Icelandic Commonwealth came to an end in 1262 when the goðar pledged fealty to the Norwegian king.
The chief religious official of the pagan revival group Ásatrúarfélagið (founded in 1972) is called allsherjargoði. The first to carry the title was Sveinbjörn Beinteinsson while the current occupant is Hilmar Örn Hilmarsson. Pagan groups outside of Iceland also sometimes use this title for their leaders.