Oletha \o-le-tha\ as a girl's name is a variant of Olethea. See for origin and meaning of Oletha.
The baby name Oletha sounds like Aletha, Oletta and Oleta. Other similar baby names are Oretha, Alethea, Elethea, Alethia, Olette, Oleda, Altha, Eltha, Letha, Olathe, Oleisa, Oleesa, Olena, Olesia, Oleana and Taletha.