Meaning A girl's name of Gaelic origin, it means "Polite One, Gentle." Origin of Myrna Gaelic , Irish Popular Middle Names Pronunciation 🔊 Listen Myrna Similar Names Marsali Mildread Malen Adelynn Imsaal Imthithal Razaanah Shairah Huwaidah Afkica Year by Year Popularity of Myrna