Fiehn
Fiehn is the family name of the following people:
- Hans Fiehn (1879–1963), German lawyer and notary
- Johann Fiehn (1875–1939), Prussian government architect , district administrator and police director
- Karl Fiehn (1888–1945), German classical philologist and high school teacher
- Wilhelm Fiehn (1851–1931), German school director and writer