Dahlen may refer to:
Places Dahlen, Saxony, a town in Saxony, Germany Dahlen Castle, built between 1744 and 1751 Dahlen, Saxony-Anhalt, a municipality in Saxony-Anhalt, Germany Dahlen, North Dakota Rheindahlen, known as Dahlen from until 1878
Other uses Dahlen (surname)
See also Dahl (disambiguation) Dahlin (surname)