Family History and Genealogy Resources by Surname
Olsen Surname Origin
(Origin Scandanavia) Patronymic surname from the Old Norse Oleifr meaning son of Olaf or Olav. (The common personal name Olaf means heir of ancestor.) An alternate spelling is Olson.
Olsen, Olson, Ollson, Ollison
Surname Variations: Olsen, Olson, Ollson, Ollison
Source: An Etymological Dictionary of Family and Christian Names With an Essay on their Derivation and Import; Arthur, William, M.A.; New York, NY: Sheldon, Blake, Bleeker & CO., 1857.