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 June 25, 1991, during the football off-season. By the Brioni Agreement, the two republics delayed the implementation of independence until October 8. 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 September 8, 1991, and March 5, 1992, respectively. On April 28, 1992, the Federal Republic of Yugoslavia was constituted by Montenegro and Serbia.