Komarnica is a geographic name that may refer to:
Komarnica (river), in northern Montenegro Komarnica dam, a proposed dam in Montenegro Komarnica, Cerkvenjak, a village near Cerkvenjak, northeastern Slovenia Komarnica, Šavnik, a village near Šavnik, central Montenegro Komarnica, Croatia, a village near Staro Petrovo Selo, eastern Croatia Komarnica Ludbreška, a village near Sveti Đurđ, northern Croatia