Red Star Belgrade is a professional football club based in Belgrade, Serbia. Founded in 1945, the club is one of the most successful in the country and has a rich history in European competitions. Their home matches are played at the Rajko Mitić Stadium, which has a capacity of over 50,000 spectators. The team is known for its passionate fan base, called Delije, who support the club fervently. Red Star Belgrade has won numerous domestic league titles and cups, as well as the prestigious European Cup in 1991, making it a significant player in both Serbian and European football.