Ethna \e-th-na\ as a girl's name is related to Eithne.

The baby name Ethna sounds like Ethnea, Ethnah and Etana. Other similar baby names are Etha, Egina, Ethnee, Ena, Elena, Elona, Athena, Athina, Edana, Edina, Edyna, Edna, Eddna, Elana, Elna, Elina, Emina, Eena, Erina, Erna, Ethel, Ethyl, Euna, Evina, Evana and Erena.