Joellen \jo(el)-len\ as a girl's name is a variant of Joelle (French), and the meaning of Joellen is "Jehovah is God".
The baby name Joellen sounds like Joellyn, Joellin and Joeleen. Other similar baby names are Hellen, Jaeleen, Jaelle, Joelynn, Joelly, Joella, Joell, Joelin, Jollene, Jolleen, Joleen, Kellen, Noelleen, Noeleen and Suellen.