Birtha \b(i)-rtha, bir-tha\ as a girl's name is a variant of Bertha (Old German), and the meaning of Birtha is "bright, famous".

The baby name Birtha sounds like Bartha and Birta. Other similar baby names are Mirtha, Berta, Artha, Barta, Berthe, Betha, Bithia, Birte, Dortha, Eartha, Hertha, Ertha and Martha.