The Aleksandar Nikolić Hall, formerly known as Pionir Hall, is an indoor sports arena located in Palilula, Belgrade, Serbia. The official seating capacity of the arena is 8,000.It was renamed in 2016 in honour of Serbian basketball player and coach Aleksandar Nikolić. The hall is well known for its frequent matches between different basketball clubs, especially Crvena Zvezda, Partizan, and foreign clubs.Projected by Ljiljana and Dragoljub Bakić, the hall has been described as the "architectural icon of the postmodernist Belgrade".