FK Crvena Zvezda, also known as Red Star Belgrade, is a professional football club based in Belgrade, Serbia. Founded in 1945, the club has a rich history and is one of the most successful teams in Serbian football. They compete in the Serbian SuperLiga and have won numerous national championships and cups. The club is renowned for its passionate fan base, known as the Delije. FK Crvena Zvezda has also made a mark in European football, winning the prestigious European Cup in 1991. Their home matches are played at the Rajko Mitić Stadium, which has a capacity of over 50,000 spectators.