Prevlaka (pronounced [prɛ̂ʋlaka]) is a small peninsula in southern Croatia, near the border with Montenegro, at the entrance to the Bay of Kotor on the eastern Adriatic coast.
Because of its strategic location in the southern Adriatic, in the aftermath of the SFR Yugoslav breakup, the peninsula became subject to a territorial dispute between Croatia and FR Yugoslavia, a federal state that included Montenegro. The territory has functioned in a provisional regime since 2002.
The narrow, uninhabited peninsula is 2.6 kilometers long and only 150–500 meters wide, covering the area of 93.33 hectares (just under 1 kilometer squared).
The word prevlaka means portage. Cape Oštro (Punta d'Ostro), located at the very tip of the peninsula, is the southernmost point of mainland in Croatia. Along with the small Montenegrin island of Mamula, which sits some 2 kilometers east of Cape Oštro, in addition to being two sides of an international maritime border, the two spots present observation entry points into the Bay of Kotor.
North of the Prevlaka isthmus, just within the Bay of Kotor, lie the two less prominent capes Konfin and Kobila, to the northwest of which is a road border crossing between Croatia and Montenegro. The D516 highway connects it to Konavle and the D8; northwards the road connects to Njivice, Sutorina and Igalo.