2020–21 Basketball League of Serbia
The 2020–21 Basketball League of Serbia will be the 15th season of the Basketball League of Serbia, the top-tier professional basketball league in Serbia. Also, it's the 77th national championship played by Serbian clubs inclusive of the nation's previous incarnations as Yugoslavia and Serbia & Montenegro.
The season is the first to be played after the previous season was abandoned due to the COVID-19 pandemic in Serbia. The Basketball Federation of Serbia ruled that the 13 teams from the previous season will stay in the league and the three highest-placed clubs from Second League will be promoted. The first-placed team from the previous season, Borac, joins the ABA League. Crvena zvezda mts is the defending champion.
The First League will start on 26 September 26 2020. The SuperLeague will start in May 2021.
Teams
A total of 21 teams participated in the 2020–21 Basketball League of Serbia.Distribution
The following is the access list for this season.| Teams entering in this round | Teams advancing from the previous round | |
| Regular season |
| |
| Playoffs |
|
|
Promotion and relegation
; Teams promoted from the Second League; Teams relegated to the Second League
- None
Venues and locations
| Team | Home city | Arena | Capacity |
| Borac | Čačak | Borac Hall | 2,000 |
| Crvena zvezda mts | Belgrade | Aleksandar Nikolić Hall | 5,878 |
| Dunav | Stari Banovci | Park Hall | |
| Dynamic VIP PAY | Belgrade | Ranko Žeravica Hall | 5,000 |
| FMP | Belgrade | Železnik Hall | 3,000 |
| Kolubara LA 2003 | Lazarevac | Kolubara Sport Center | 1,700 |
| Mega Bemax | Belgrade | Mega Factory | 700 |
| Metalac | Valjevo | Valjevo Sports Hall | 1,500 |
| Mladost | Zemun | Master Sport Center | 750 |
| Napredak JKP | Aleksinac | Aleksinac Sports Hall | 1,400 |
| Novi Pazar | Novi Pazar | Pendik Sports Hall | 1,600 |
| OKK Beograd | Belgrade | Mega Factory | 700 |
| Partizan NIS | Belgrade | Štark Arena | 18,386 |
| Pirot | Pirot | Pirot Kej Hall | 835 |
| Radnički | Kragujevac | Jezero Hall | 3,750 |
| Sloboda | Užice | Veliki Park Hall | 2,200 |
| Sloga | Kraljevo | Kraljevo Sports Hall | 3,350 |
| Tamiš | Pančevo | Strelište Sports Hall | 1,100 |
| Vojvodina | Novi Sad | SPC Vojvodina | 7,022 |
| Vršac | Vršac | Millennium Center | 4,400 |
| Zlatibor | Čajetina | Čajetina Sport Center |
| Teams that play in the 2020–21 First Adriatic League | |
| Teams that play in the 2020–21 Second Adriatic League |