Kovačić (Serbo-Croatian, Serbo-Croatian Cyrillic: Ковачић), alternatively spelled Kovačič in Slovene and Slovak (feminine (Slovak): Kovačičová), Kovacsics in Hungarian, or transliterated as Kovacic/Kovacich/Kovachich in English, is one of the most common surnames in Croatia, Slovenia, as well as Hungary and Serbia. Etymologically it is a patronymic derivative of the surname Kovač, which is a Slavic cognate of the English surname Smith, and as such is closely related to the similar surname Kovačević.
https://en.wikipedia.org/wiki/Kova%C4%8Di%C4%87