Jahn (Jähn) is a German surname. Notable people with this surname include the following:
- Constanze Jahn (born 1963), German chess player
- David Jahn (born 1975), Czech burlesque impresario
- Eduard Jahn (1871–1942), German mycologist and microbiologist
- Erich Jahn (born 1907, date of death unknown), Hitler Youth leader
- Friedrich Ludwig Jahn (1778–1852), German educator, founding figure of German Turner athletic movement
- Gunnar Jahn (1883–1971), Norwegian politician and resistance member
- Gunter Jahn (1910–1992), German U-boat commander
- Hans Max Jahn (1853–1906), German physical chemist
- Helmut Jahn (1940–2021), German-American architect
- Hermann Arthur Jahn (1907–1979), British scientist
- Jan Jahn (1739–1802), Czech painter and art historian
- Jeff Jahn (born 1970), American artist and critic
- Johann Jahn (1750–1816), German Orientalist
- Kurt Jahn (1892–1966), German general
- Marie-Luise Jahn (1918–2010), German physician
- Martin Jahn (c. 1620 – c. 1682), German church musician, minister, hymnwriter
- Martin Jahn (born 1970), Czech economist and politician
- Joseph Michael Jahn (born 1943), American author and critic
- Molly Jahn, American plant scientist and food security policy advisor
- Otto Jahn (1813–1869), German archaeologist, philologist, and writer on art and music
- Patrick Jahn (born 1983), German football player
- Robert G. Jahn (1930–2017), American scientist, electrical engineer, and psychic investigator
- Ryan David Jahn (born 1979), American novelist and screenwriter
- Sigmund Jähn (1937–2019), German astronaut
- Thomas Jahn (born 1965), German film and television director
- Wilhelm Jahn (1835–1900), Austro-Hungarian orchestral conductor
- Willie Jahn (1889–1973), German athlete, leader of the Wandervogel youth movement, folksong composer, publisher, World War II army officer
This page lists people with the surname Jahn, Jähn.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.
If an internal link intending to refer to a specific person led you to this page, you may wish to change that link by adding the person's given name(s) to the link.