Trnovica may refer to several places:
In Bosnia and Herzegovina Trnovica, Bileća, a village Trnovica, Kalinovik, a village Trnovica, Zvornik, a village near Zvornik
In Croatia Trnovica, Dubrovnik-Neretva County, a village in Dubrovačko Primorje Trnovica, Primorje-Gorski Kotar County, a village near Jelenje
In Kosovo Trnovica, Kosovo, a village near Podujevo
In Montenegro Trnovica, Montenegro, a village near Kolašin
In Slovenia Trnovica, Ivančna Gorica, a village