Catlain \c(a)-tlain, cat-lain\ as a girl's name is a variant of Caitlin (Old French, Greek), and the meaning of Catlain is "pure".

The baby name Catlain sounds like Catlin and Catlaina. Other similar baby names are Cailin, Caylin, Caelan, Catlynn, Catlyn, Catline, Catelan, Calin, Caitlann, Caitlan, Caetlin, Caelin, Callan, Caelainn, Carlin, Carlein, Carlan, Katlaina, Catrin, Catlina, Catalin, Catleen and Katlin.