Dalen \d(a)-len\ as a boy's name is a variant of Dale (Old English) and Daylon (American), and the meaning of Dalen is "valley".

The baby name Dalen sounds like Dalon, Dallen, Dalan, Daylen, Dalyn and Talen. Other similar baby names are Dagen, Daley, Dalten, Damen, Daren, Daven, Galen, Jalen, Halen, Kalen and Valen.