Olsen

Olsen is a Scandinavian patronymic surname meaning son of Ole. Ole belongs to the Olaf name family, so the surname preserves a link between generations rather than describing an occupation or a place. Used as a first name, Olsen carries that family-name structure into a different position.

The surname is recognizable through actors Mary-Kate, Ashley, and Elizabeth Olsen, although a family's own surname connection may be the more personal reason for choosing it. Olson is a related spelling found in the wider Scandinavian family. Olsen's clear two-part shape makes its origin relatively easy to explain, while its first-name use can preserve a maternal surname or another ancestral connection without changing the spelling.