Cognomen Gmajnić (Gmajnić 
) , in the world, is a rare last name. The family name Gmajnić is habitual in Southern Europe, particularly Croatia, where it is quite a rare surname.
Ana, Josipa, Vedran, Žarko, Marijan, Stjepan, Dragica, Tihomir, Lucija, Zdravko, Miroslav, Kristina, Dragutin, Ljiljana, Tomislav, Štefica, Margareta, Marijana, Snježana, Rudika, Branka, Ema, Luka, Nada, Ivan, Marin, Mario, Marko, Renato, Sanja, Darko, Damir, Josip, Ivana, Marija, Martin, Matija, Karlo, and Štefanija