Caelyn \ca(el)-yn\ as a girl's name is a variant of Cailin (Gaelic), Caitlin (Old French, Greek) and Caoilainn (Irish), and the meaning of Caelyn is "girl; pure; slender and white, fair or pure".

The baby name Caelyn sounds like Cailyn, Caelan, Caylyn, Calyn, Caelin and Kaelyn. Other similar baby names are Catlyn, Catelyn, Carlyn, Daelyn, Jaelyn and Raelyn.