Arntzen is a surname. Notable people with the surname include:
Andrea Arntzen (1875–1958), Norwegian nursing teacherAndreas Arntzen (1777–1837), Norwegian politicianAndreas Arntzen (barrister) (1928–2012), Norgwegian barristerArthur Arntzen (1906–1997), Norwegian politician for the Labour PartyArthur Arntzen (humorist) (born 1937), Norwegian journalist, humorist, actor and writerCharles Arntzen, Regents Professor at Arizona State UniversityHaakon Arntzen, Canadian politicianHeinrich Arntzen (born 1894), World War I flying ace credited with eleven aerial victoriesHolly Arntzen prominent eco-musician focussing attention on the Salish Sea through her Music, songs and programs with school children.Jon Gunnar Arntzen (born 1951), Norwegian encyclopaedistKarelius August Arntzen (1802–1876), Norwegian politicianLloyd Arntzen (born 1927), jazz clarinettist, folk singer, and soprano saxophonist from CanadaNiels Arntzen Sem (1782–1859), Norwegian politicianOle Arntzen (1910–1973), Norwegian businessman and resistance leaderOle Arntzen Lützow (1801–1871), Norwegian politicianOle Arntzen Lützow-Holm (1853–1936), Norwegian priest and Conservative Party politicianOrie Arntzen (1909–1970), American Major League Baseball pitcherSture Arntzen (born 1948), Norwegian trade unionistSven Arntzen (1897–1976), Norwegian barrister