Bethan \b(e)-than\ as a girl's name is of Welsh origin. Pet form of Beth. Now used commonly in the English-speaking world.
Baby names that sound like Bethan are Bethany, Bethann and Bethani. Other similar baby names are Betha, Betheny, Bethanny, Bethanne, Bethanie, Bethaney, Bethanee, Bethea, Bethia, Bethel, Bethune, Bethuna, Betiana and Bethie.