The 1991–92 Football Cup of Yugoslavia was the national knock-out football competition in the Socialist Federal Republic of Yugoslavia, which was held during the breakup of the state. The republics of Croatia and Slovenia declared their independence on 25 June 1991, during the football off-season. By the Brioni Agreement, the two republics delayed the implementation of independence until 8 October. While the two countries were nominally still part of Yugoslavia, their clubs withdrew from the Yugoslav football system. Over the course of the competition, Macedonia and Bosnia and Herzegovina declared independence on 8 September 1991, and on 5 March 1992, respectively. On 28 April 1992, the Federal Republic of Yugoslavia was constituted by Montenegro and Serbia.