Deyn \de-yn\ as a boy's name is a variant of Dean (Old English), and the meaning of Deyn is "valley; church official".

The baby name Deyn sounds like Deen, Deon, Den and Deyon. Other similar baby names are Devyn, Del, Teun, Ben, Benn, Boyn, Kean, Dan, Dann, Dayne, Dain, Daryn, Davyn, Day, Daye, Deylin, Dalyn, De-, DeRon, Delon, Dejon, Deke, Dene, Deane, Dee, Deion, Deli, Dell, Delwyn, Denny, Denys, Dion, Derwyn, Des, Dezi, Desi, Deri, Deus, Dev, Deven, Devin, Devynn, Devon, Devan, Dewi, Deonn, Doan, Don, Donn, Dunn, Edyn, Gwyn, Wyn, Jean, Sean, Keyne, Keen, Ken, Kenn, Keon, Lenn, Len, Leon, Lyn, Penn, Pen, Ren, Reyni, Teyo, Tern, Teryn, Tevyn and Wayn.