Olaf Haraldsson

'''Olaf Haraldsson''' (Old Norse: ''Óláfr Haraldsson'') may refer to:

* Olaf Haraldsson Geirstadalf (died in 934), reputed son of King Harald Fairhair of Norway * Olaf II of Norway (995–1030), King of Norway from 1015 to 1028 * Olaf III of Norway (c. 1050 – 1093), King of Norway from 1067 to 1093