Dougan \do(u)-gan\ as a boy's name is a variant of Dugan (Irish, Gaelic), and the meaning of Dougan is "dark, swarthy".
The baby name Dougan sounds like Douggan and Doogan. Other similar baby names are Dougal, Dargan, Deegan, Dagan, Doan, Dolan, Donnan, Doran, Dorran, Dorian, Dugal, Dougall, Doug, Dowan, Duggan, Duran, Hogan, Logan, Loucan and Rogan.