Hagen is the name of some different cities in Europe.
Germany
- Hagen (NRW), a city in North-Rhine Westphalia
- Hagen a.T.W., Hagen am Teutoburger Wald near Osnabrück
- Hagen i. B., Hagen im Bremischen in the north of Lower Saxony
- Hagen (Holstein) in Schleswig-Holstein
France
- Hagen (Moselle), a village in the Département Moselle