'''Simonsen''' is a surname. Notable people with the surname include:
* Allan Simonsen (born 1952), Danish football player * Allan Simonsen (racing driver) (1978–2013), Danish racing driver * Bengt Simonsen (racewalker) (born 1958), Swedish racewalker * Fanny Simonsen (c. 1835–1896), French-born soprano in Australia * Iluska Pereira da Cunha Simonsen (1941–2017), Brazilian chess master * Jan Simonsen (1953–2019), Norwegian politician * John Ditlev-Simonsen (1898–1967), Norwegian sailor * Karen Simonsen, Canadian judge * Kirsten Simonsen (born 1946), Danish geographer and sociologist * Lasse Simonsen (born 1953), Norwegian law professor * {{anbl|Marie Simonsen}} * Mário Henrique Simonsen (1935–1997), Brazilian economist, professor, banker, and finance minister * Martin Simonsen (c. 1829–1899), Danish-born violinist and impresario in Australia * Mikael Simonsen (1882–1950), Danish rower * Olaf Ditlev-Simonsen (1897–1978), Norwegian sailor * Per Ditlev-Simonsen (born June 12, 1932), Norwegian politician * Peter Simonsen (born 1959), New Zealand football player * Redmond A. Simonsen (1942–2005), American graphic artist * Renée Simonsen (born 1965), Danish model * Rob Simonsen (born 1978), American composer * Rudolph Simonsen (1889–1947), Danish composer * Steve Simonsen (born 1979), English football goalkeeper * Thorkild Simonsen (1926–2022), Danish politician * Wallace Cochrane Simonsen (1884–1955), Brazilian banker
== See also == * Simmonds * Symonds * Symons * Simons * Simonson * Simonsson
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Category:Danish-language surnames Category:Norwegian-language surnames Category:Patronymic surnames Category:Surnames derived from given names