Olsen (Danish pronunciation: [ˈoˀlsn̩]) is a Danish-Norwegian patronymic surname meaning "son of Ole". The surname Olesen (pronounced [ˈoːləsn̩]) has a similar origin. The Swedish parallel form is Olsson – "son of Ole". Danish and Norwegian immigrants to English-speaking countries often changed the spelling to Olson in order to accommodate English orthographic rules.

Notable people with the surname include:

A–K edit

L–Z edit

Fictional characters with the surname include edit

See also edit