Hansen or Hanssen refers to:
- Persons
- Al Hansen (1927–1995), American artist
- Alan Hansen (1955–), Scottish footballer
- Ann Hansen (contemporary), Canadian anarchist and bomber
- Ashia Hansen (1971–), British athlete, Olympic contestant
- Beck Hansen a.k.a Beck (1970–), American musician, songwriter
- Bernie Hansen (contemporary), American politician in Chicago politics
- Betsy Hansen (dates unknown), woman who charged actor Errol Flynn with statutory rape in 1942
- Bjørn Bull-Hansen (1972–), Norwegian fantasy writer and former championship weightlifter
- Carl Hansen (1872–1936), Danish author
- Clifford Hansen (1912–), American politician from Wyoming
- Colin Hansen (contemporary), Canadian politician from British Columbia
- Constantin Hansen (1804–1880), Danish artist
- Courtney Hansen (contemporary), American model and television personality
- Craig Hansen (1983–), American professional baseball player
- Dave Hansen (1947–), American politician from Wisconsin
- David Hansen (contemporary), actor, director, and playwright
- Derek Hansen (contemporary), Australian writer
- Elaine Hansen (contemporary), president of Bates College
- Emil Hansen (1842–1910), Danish fermentation physiologist
- Erik Hansen (1965–), Norwegian author
- Eva Hansen (1964–), Danish politician
- Flemming Hansen (1939–), Danish politician
- Gary Hansen (?–), American economist at UCLA
- George V. Hansen (1930–), American politician, representative from Idaho
- Gerhard Hansen (1841–1912), Norwegian physician, discover of the cause of leprosy
- Glenna Hansen (1956–), Canadian Inuvialuit politician
- Gunnar Hansen (1947–), Icelandic-American actor
- Gus Hansen (contemporary), Danish professional poker player
- Hans Hansen (1855–1936), Danish zoologist
- Hans Hansen (1906–1960), Prime Minister of Denmark 1955–1960
- Helmer Hanssen (1870–1956), Norwegian polar explorer
- Ib Hansen, pseudonym of Austrian poet Hans C. Artmann (1921–2000)
- James Hansen (1941–), American climate scientist
- Jan Hansen (1971–), Danish athlete, Olympic contestant
- Joachim Hansen (1930–), German actor
- Joachim Hansen (1979–), Norwegian Mixed martial artist
- John Hansen (contemporary), Scottish footballer
- Joseph Hansen (1910–1979), American Trotskyist and leader of the American Socialist Workers Party
- Joseph Hansen (1923–2004), Author
- Julie Hansen (1890–1960), Danish astronomer
- Kai Hansen (1963–), German power metal musician
- Liane Hansen (contemporary), American radio journalist and radio show host
- Martin Hansen (1972–), Danish badminton player, Olympic contestant
- Mary Hansen (1966–2002), Australian guitarist and singer
- Per Hansen (1938–), Danish computer scientist
- Per Hansen (1965–), Norwegian football coach
- Percy Hansen (1890–1951), Danish recipient of the Victoria Cross
- Peter Hansen (1795–1874), Danish astronomer
- Peter Hansen (1921–), American actor
- Peter Hansen (1941–), Danish UN official
- Phil Hansen (dates unknown), American former football player
- Rick Hansen (1957–), Canadian paraplegic athlete and humanitarian
- Robert Hanssen (1944–), American FBI agent convicted of spying for Russia
- Ron Hansen (1938–), American professional baseball player
- Ron Hansen (1943–), Canadian politician from Ontario
- Ron Hansen (1947–), American novelist, essayist, and professor
- Stan Hansen (1949–), American professional wrestler
- Theophil von Hansen (1813–1891), Danish-Austrian architect
- William W. Hansen (1909–1949), American physicist
- Fictional persons
- Annika Hansen, character in the Star Trek universe (see Seven of Nine)
See also