This article lists political parties in Yugoslavia (1918âÂÂ1991). The Kingdom of Yugoslavia was a multi-party state (1918âÂÂ1929, 1931âÂÂ1941) and a one-party state under a royal dictatorship (1929âÂÂ1931). The Socialist Federal Republic of Yugoslavia was a MarxistâÂÂLeninist one-party state (1945âÂÂ1948), a Titoist one-party state (1948-1990), and also a multi-party state for short period before the breakup of Yugoslavia (1990âÂÂ1991).