Last name Бусак (Busak 
, Бусак 
) , around the globe, is a rare surname. The family name Бусак is habitual in Croatia, where it is quite a rare surname, Hungary, and Czechia, where it is a rare surname. Not in comparison with a country's population, it is the most numerous in Hungary, Croatia, and India. Also, Бусак is the forename as well as the last name.