Muirna \mu(ir)-na\ as a girl's name is a variant of Myrna (Irish, Gaelic), and the meaning of Muirna is "beloved".
The baby name Muirna sounds like Murna, Mirna and Meirna. Other similar baby names are Minna, Mina, Mira, Maira, Marna, Muire, Moira, Mdina, Meira, Mirla, Mirra, Mirka, Mirana, Mirta, Moina, Morna, Muna, Merna, Quirina and Virna.