Olaf Magnusson

Olaf (IV) Magnusson (born c. 1099—died 1115) was the king of Norway (1103–15), the illegitimate son of King Magnus III Barefoot.

On the death of his father in 1103, he was proclaimed king jointly with his elder brothers, Eystein I and Sigurd, who administered the young Olaf’s share of the kingdom until his early death. He is sometimes not counted in regnal lists of Norway.