Agnes Haakonsdatter of Norway

Agnes Haakonsdatter (1290–1319) was the elder daughter of King Haakon V of Norway, born before her parents' marriage. As she was illegitimate, the succession was settled in favour of her younger sister Ingeborg, with Agnes's descendants retaining a contingent claim.

In 1302 she married Baron Havtore Jonsson, governor of Romerike, whose estates included Borregård. Her sons Jon and Sigurd Havtoresson held leading roles in the Norwegian council under her nephew, King Magnus VII Eriksson.