Franzen is a Scandinavian surname that may refer to:
- Franzen, Wisconsin, a town in the United States
- Anders Franzén (1918–1993), a Swedish underwater archaeologist
- Cola Franzen (b. 1923), an American writer and translator
- Frans Michael Franzén (1772–1847), a Swedish poet
- Ivar Franzén (1932–2004), a Swedish politician
- Johan Franzén (b. 1979), a Swedish professional ice hockey player
- Jonathan Franzen (b. 1959), an American novelist and essayist
- John Erik Franzén (b. 1942), a Swedish artist
- Mathias Franzén, a Swedish handball player
- Mia Franzén (b. 1971), a Swedish politician
- Michelle Franzen, an American correspondent for NBC News
- Nils Franzén (1910–1985), a Swedish politician
- Nils-Olof Franzén (1916–1997), a Swedish author
- Peter Franzén (b. 1971), a Finnish actor
- Peter Franzen, an English journalist
- Rikard Franzén (b. 1968), a Swedish professional ice hockey player
- Sixten Franzén (1919–2008), a Swedish scientist
- Torkel Franzén (1950–2006), a Swedish academic