Joanne \jo(an)-ne\ as a girl's name is a variant of Joanna. See for origin and meaning of Joanne. See also Jo.
The baby name Joanne sounds like Janne, Jeanne, Joannue, Joanie, Joane, Joeanne, Joann and Joyanne. Other similar baby names are Jovanne, Josanne, Johanne, Jolanne and Roanne.