Haakon Magnusson (Old Norse: Hákon Magnússon: Norwegian: Håkon Magnusson; 1068 – February 1095), byname Toresfostre (Old Norse: Þórisfóstra, meaning "fostered by Tore"), was King of Norway from 1093 to 1095.
Haakon was only partially recognized within Norway and his reign was thus of limited significance.
In 1090, he undertook a Viking expedition to Bjarmaland,[citation needed] today the area of Arkhangelsk in northern Russia.
In 1095, Magnus Berrføtt prepared an armed action against Haakon, but was surprised by the strong position held by his cousin.
When Haakon learned that Magnus had come to Trondheim, he went across the Dovrefjell mountain range.