Arlyn \a-rl-yn, ar-lyn\ as a boy's name (also used as girl's name Arlyn), is a variant of Arlen (Gaelic), and the meaning of Arlyn is "pledge, oath".

The baby name Arlyn sounds like Arlin and Arlan. Other similar baby names are Alyn, Allyn, Arly, Arwyn and Arvyn.