Kathleen \k(a)-th-leen\ as a girl's name is pronounced kath-LEEN. It is of Irish origin. Variant of Katherine (Greek) "pure". First used outside of Ireland in the 1840s. Actress Kathleen Turner.
Kathleen has 26 variant forms: Cathaleen, Cathaline, Cathleen, Kaitlin, Kaitlinn, Katha, Kathaleen, Kathaleya, Kathaleyna, Kathaline, Kathelina, Katheline, Kathleena, Kathlena, Kathlene, Kathleyn, Kathlin, Kathline, Kathlyn, Kathylyne, Kathlynn, Kathyline, Katleen, Katlin, Katline and Katlyne.
For more information, see also the related name Catherine.