Ostrovica may refer to:
Albania Ostrovicë, or Ostrovica, a mountain
Bosnia and Herzegovina Ostrovica, Bosnia and Herzegovina, a village near Kulen Vakuf Ostrovica Castle, a castle
Croatia Ostrovica, Croatia, a village near Benkovac, in Lišane Ostrovičke municipality Ostrovica Fortress, a castle Oštrovica, an interchange on the A6 motorway in Primorje-Gorski Kotar County
Serbia Ostrovica, Niška Banja, a village near Niš Ostrvica Fortress, or Ostrovica, a castle Ostrovica (Tutin), a village Ostrovica (Vladičin Han), a village
Slovenia Ostrovica, Hrpelje-Kozina, village in Slovenia
See also Ostrvica (disambiguation) Ostrovitsa, Bulgaria, a village