Haakon Haraldsson, also Haakon the Good and Haakon Adalsteinfostre, was the king of Norway from 934 to 961. He was noted for his attempts to introduce Christianity into Norway.

The Christianization of Scandinavia, as well as other Nordic countries and the Baltic countries, took place between the 8th and the 12th centuries. The realms of Denmark, Norway and Sweden established their own archdioceses, responsible directly to the pope, in 1104, 1154 and 1164, respectively. The conversion to Christianity of the Scandinavian people required more time, since it took additional efforts to establish a network of churches.