Karlein \k(a)-rlein, kar-lein\ as a girl's name is a variant of Caroline (Old German), and the meaning of Karlein is "free man".

The baby name Karlein sounds like Karlin, Karlen, Karleen and Carlein. Other similar baby names are Kalin, Carlin, Carleen, Karlynn, Karlyn, Karlina, Karlene, Karlena, Carlen, Karline, Karlie, Karli, Karleigh, Karlee, Karmen, Karmin, Karolin, Karaleen, Carolein, Katleen, Karrin, Karin, Karen, Kareen, Darleen, Earleen, Harleen, Kaleen, Karren, Kareina, Karley, Katlin, Kaylin, Kayleen, Kaylen, Kalen, Kailin, Kaileen, Kaelin, Marlen, Marleen, Marlin, Marleina and Marlenn.