Cognomen Júlía (Júlía 
) , in the entire world, is an extremely rare family name. The last name Júlía is habitual in Northern America, particularly the United States, where it is an extremely rare surname. Predominantly, Júlía is the forename as well as the last name.
Khoo, Sigurbjartsdóttir, Sigurðardóttir, Guðbjörnsdóttir, Guðmundsdóttir, Gunnarsdóttir, Svavarsdóttir, Þorvaldsdóttir, Eiríksdóttir, Traustadóttir, Jóhannesdóttir, Davíðsdóttir, Kristjáns, Björnsdóttir, Kristjánsdóttir, Árnadóttir, Rachenko, Karlsdóttir, Sighvats, Magnúsdóttir, Helgadóttir, Hafþórsdóttir, Egilsdóttir, Jónsdóttir, Poulsen, Oddsdóttir, Hannam, Birgis, Atladóttir, Runólfsdóttir, and Alexandersdóttir