Althaea \a-lthaea, al-thaea\ as a girl's name is a variant of Althea (Greek), and the meaning of Althaea is "healing herb".

The baby name Althaea sounds like Althaia, Alethea, Alithea, Alathea, Alitheea, Altha, Elthea and Althia. Other similar baby names are Altheda and Anthea.