OKK Beograd

Omladinski košarkaški klub Beograd (Serbian Cyrillic: Омладински кошаркашки клуб Београд), commonly referred to as OKK Beograd, is a men's professional basketball club based in Belgrade, Serbia. They are currently competing in the Basketball League of Serbia. It is part of the multi-sports Belgrade-based sport club OSD Beograd. The club is the league affiliate of Mega Basket.

The club was founded in 1945 as KK Metalac. In 1950, the club changed its name to KK BSK, and then in 1958 to OKK Beograd, which it keeps to this day. The OKK Beograd squads have won 4 National League championships. They have played three different National League since 1945, including the Yugoslav First Federal League (1945–1992), the First League of Serbia and Montenegro (1992–2006), and the Serbian League (2006 onward). They have also won 3 National Cup titles.

The club has its own Hall of Fame. The members are Radivoj Korać, Slobodan Gordić, Bogomir Rajković, Trajko Rajković, Miodrag Nikolić, Milorad Erkić, and Borislav Stanković. Several members of the club have been inducted into the FIBA Hall of Fame, including player Korać, coach Aleksandar Nikolić and contributors Radomir Šaper and Stanković. Stanković and Korać are members of the Basketball Hall of Fame.