Harmsen is a Dutch patronymic surname, meaning "son of Harm" (a version of Herman). Notable people with the surname include@

• Bill Harmsen (1912–2002), American businessman
• Daniëlle Harmsen (born 1986), Dutch tennis player
• Eelco Martinus ten Harmsen van der Beek (1897–1953), Dutch illustrator
• Hans Harmsen [de; pl] (1899–1989), German eugenicist who became a founding member of the International Planned Parenthood Federation.
• Jessica Harmsen, Australian television presenter
• Jessica Harmsen (chess player) (born 1966), Dutch chess player
• Joris Harmsen (born 1992), Dutch BMX rider
• Sallie Harmsen (born 1989), Dutch actress

This page lists people with the surname Harmsen.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.