Andersen (Danish pronunciation: [ˈɑnɐsn̩]) is a Danish-Norwegian patronymic surname meaning "son of Anders" (itself derived from the Greek name "Ανδρέας/Andreas", cf. English Andrew). It is the fifth most common surname in Denmark, shared by about 3.2% of the population.^[1]

From the same root – the given name Andreas – derives the surname Andreasen Danish pronunciation: [ænˈtʁeˀæsn̩] (cognate Andreassen) and Andresen Danish pronunciation: [ænˈtʁeˀsn̩].

The numbers of bearers of the surnames Andersen, Andreasen, Andreassen and Andresen in Denmark and Norway (2009):

Persons

• Adda Husted Andersen (1898–1990), Danish-born American Modernist jeweler, silversmith, metalsmith, and educator
• Aksel Andersen (1912–1977), American-Danish organist and composer
• Aksel Frederik Andersen (1891–1972), Danish mathematician
• Alex Høgh Andersen (born 1994), Danish actor
• Alf Andersen (1906–1975), Norwegian ski jumper
• Alf Andersen (musician), Norwegian flautist
• Alsing Emanuel Andersen (1893–1962), Danish politician
• Anders Ejnar Andersen (1912–2006), Danish politician
• André Andersen (born 1961), Russian-Danish multi-instrumentalist and composer
• Anja Andersen (born 1969), Danish handball coach and former handball player.
• Arthur E. Andersen (1885–1947), founder of the eponymous former auditing, tax and consulting firm
• Arvid Andersen (1909–1970), Danish composer
• Benny Andersen (1929–2018), Danish composer
• Bridgette Andersen (1975–1997), American child actress
• Britta Andersen (born 1979), Danish badminton player
• Børge Andersen (1934–1993), Danish chess player
• Carl Albert Andersen (1876-1951), Norwegian pole vaulter
• Chris Andersen (born 1978), American basketball player
• Daniel Andersen (1885–1959), Danish composer
• David Andersen (born 1980), Australian basketball player
• Derek Andersen, American DJ
• Dorothy Hansine Andersen (1901–1963) American physician, pediatrician, pathologist, identifier of cystic fibrosis
• Elisabeth Andersen (1920–2018), stage name for the Dutch actress Anna Elisabeth de Bruijn
• Ellen Andersen (1898–1989), Danish museum curator
• Else Winther Andersen (born 1941), Danish politician
• Eric Andersen (born 1943), American singer-songwriter
• Eric Andersen (artist) (born 1940), Danish artist
• Erik Andersen (disambiguation), several people
• Eyvin Andersen (1914–1968), Danish composer
• Francis Andersen (1925–2020), Australian scholar of Biblical Hebrew
• Frederik Andersen (born 1989), Danish ice hockey goaltender
• Fritz Andersen (1829–1910), Danish composer
• Ginny Andersen, New Zealand politician
• Greta Andersen (1927–2023), Danish-American swimmer
• Hakon Andersen (1875–1959), Danish composer
• Hans Christian Andersen (1805–1875), Danish playwright and author
• Hans Niels Andersen (1852–1937), Danish shipping magnate, businessman and founder of the East Asiatic Company
• Hjalmar Andersen (1923–2013), Norwegian speed skater
• James Roy Andersen (1904-1945), A United States Army Air Forces General
• Jette Andersen (runner) (born 1945), Danish international athlete
• Joachim Andersen (composer) (1847–1909), Danish flautist, conductor and composer
• Joachim Andersen (footballer) (born 1996) Danish footballer
• Johanne Andersen (women's rights activist) (1862–1925), Danish women's rights activists
• Johannes Andersen (musician) (1890–1980), Danish composer
• Kai Normann Andersen (1900–1967), Danish composer
• Kenneth Andersen, Norwegian player of American football and a member of the Eidsvoll 1814s
• Kim Andersen (cyclist) (born 1958), Danish former professional road bicycle racer and current cycling team directeur sportif
• Kirsti Andersen (born 1941), historian
• Knud Andersen (disambiguation), several people
• LaDell Andersen (1929–2019), American basketball coach
• Mads Andersen (born 1995), Danish chess grandmaster
• Mark Andersen, American community activist
• Matt Andersen, Canadian musician
• May Andersen (born 1982), Danish model
• Michael Andersen (born 1974), Danish basketball player
• Mikkel Andersen (disambiguation)
• Morten Andersen (born 1960), Danish American football player
• Neil L. Andersen (born 1951), member of the Quorum of the Twelve Apostles in the LDS Church
• Ron Andersen (1941–1997), American bridge player
• Roy Andersen (born 1955), Norwegian long-distance runner
• Roy Andersen (general) (born 1948), South African businessman and retired general
• Sarah Andersen, American cartoonist (Sarah's Scribbles)
• Sophus Andersen (1859–1923), Danish composer
• Stell Andersen, (1897–1989), American pianist
• Stephan Andersen (born 1981), Danish football goalkeeper
• Stephen O. Andersen (born 1948), scientist
• Theresa Berg Andersen (born 1979), Danish politician
• Tom Andersen, American politician
• Torben Andersen, American economist
• Troy Andersen (born 1999), American football player
• Uell Stanley Andersen (1917–1986), American writer
• Vilhelm Andersen (1864–1953), Danish author

Fictional characters

• Jesse Anderson (Yu-Gi-Oh! GX), also named Johan Andersen, from the anime Yu-Gi-Oh! GX
• Riley Andersen, from the Disney Pixar film Inside Out