Family name Kolačko (Kolačko 
) , throughout the world, is a rare last name. The last name Kolačko is habitual in Southern Europe, particularly Croatia, where it is quite a rare surname.
Ana, Marina, Marija, Marijo, Melita, Mladen, Stanko, Slavko, Katica, Patrik, Robert, Danica, Darijo, Lucija, Josipa, Jelena, Martina, Stjepan, Slavica, Andreja, Antonio, Barbara, Ivica, Ivana, Filip, Josip, Luj, Tea, Iva, Alen, Kata, Deni, Dora, Leon, Luka, Nino, Božica, Ivan, Milan, Anica, Karlo, Petra, Petar, Dario, Davor, Drago, Janko, Jakov, Mateo, and Biljana