Harlen \ha(r)-len\ as a boy's name is a variant of Harlan (Old English), and the meaning of Harlen is "army land".

The baby name Harlen sounds like Harlyn, Harlin and Harlenn. Other similar baby names are Garlen, Hallen, Halen, Hamlen, Harben, Harden, Harken, Harley, Harlee, Harlea, Harmen and Marlen.