OFK Beograd, also known in English as OFK Belgrade and currently referred to as OFK Beograd Mozzart Bet (Serbian Cyrillic: ОФК Београд Моцарт Бет) for sponsorship reasons, is a Serbian professional football club based in Belgrade, more precisely in Karaburma, an urban neighborhood of the municipality of Palilula. It is part of the OSD Beograd sport society. All up, the club has won 5 national championships, in the following seasons: 1930–31, 1932–33, 1934–35, 1935–36, and 1938–39; the club won these titles under their old name of BSK (Beogradski Sport Klub). The club has been cup winners five times also, winning in the following seasons: 1934, 1953, 1955, 1961–62, and 1965–66. The club has also recorded significant results in European competition, reaching the 1962–63 European Cup Winners' Cup semi-finals where they lost to Tottenham Hotspur. They reached the 1972–73 UEFA Cup quarter-finals where they lost to FC Twente. Wikipedia