Illia \i(l)-lia\ as a girl's name is a variant of Iliana (Greek), and the meaning of Illia is "Trojan".

The baby name Illia sounds like Allia, Ellia and Illa. Other similar baby names are Illsa, Alaia, Allie, Alli, Alla, Ilysa, Ellie, Elli, Alliah, Alia, Ilona, Illissa, Melia, Malia, Delia, Callia, Selia, Cilia, Celia, Sillia, Silia, Ella, Nelia, Dalia, Ila, Ilana, Elia, Ilsa, Ilka, Ilysia, Eulia, Filia, Galia, Gallia, Gilia, Jullia, Julia, Halia, Hellia, Helia, Idalia, Isla, Ilania, Ilaria, Ilena, Illiana, Ilima, Illona, Ilisa, Iola, Ionia, Belia, Yulia, Kalia, Lalia, Lallia, Lelia, Lilia, Lellia, Lillia, Talia, Olla, Olia, Ollie, Pelia, Tallia, Tulia, Tullia, Ulli, Ulla, Vallia, Xylia, Zelia, Zalia, Zylia and Zolia.