Dallen \d(al)-len\ as a boy's name is a variant of Dallan (Irish) and Dallin (Old English), and the meaning of Dallen is "blind; from the valley".

The baby name Dallen sounds like Dalen, Dallon, Daylen, Dillen and Tallen. Other similar baby names are Dalle, Dalles, Dalten, Hallen, Mallen and Vallen.