Bagler

thumb|300px|right|Young Håkon Håkonsson being transported to safety from his enemies as imagined by 19th-century painter Knud Bergslien (1869) The Bagli Party or Bagler (Old Norse: Baglarr, Norwegian Bokmål: Bagler, Norwegian Nynorsk: Baglar) was a faction or party during the Norwegian Civil Wars. The Bagler faction was made up principally of the Norwegian aristocracy, clergy and merchants.

It was formed in Skåne, then part of Denmark, in 1196 principally by Bishop Nicholas Arnesson of Oslo and Archbishop Erik Ivarsson (ca. 1130–1213) of Nidaros around the pretender Inge Magnusson (nicknamed the Baglar-King) to depose King Sverre Sigurdsson. It contested with the Birkebeiners, essentially a faction of peasants, led by the pretender King Sverre, for control in a Norwegian civil war during the late 12th century. Sverris saga provided Sverre a royal lineage as putative bastard son of the late king Sigurd II of Norway, which in the Norway of the time provided him a claim to the throne. Historians generally agree with the consensus of his time that he was a pretender/ impostor.