2020–21 ABA League First Division

ABA League First Division
Season2020–21
DurationOctober 2, 2020April 27, 2021
(Regular season)
Games played24 each
Teams14
TV partner(s)Arena Sport, B92
Regular season
Top seed Crvena zvezda mts
Season MVP Filip Petrušev
Promoted Studentski centar
Relegated Koper Primorska (disqualified)
Finals
Champions Crvena zvezda mts (5th title)
Runners-up Budućnost VOLI
Semifinalists Mornar
Igokea
Finals MVP Landry Nnoko
Awards
Top Prospect Filip Petrušev
Statistical leaders
Points Filip Petrušev 23.71
Rebounds Marko Simonović 8.96
Assists Filip Čović 6.70
Index Rating Filip Petrušev 27.95
Records
Biggest home winMornar 109–68 Cibona
(12 October 2020)
Biggest away winKrka 57–98 Crvena zvezda mts
(20 April 2021)
Highest scoringPartizan NIS 99–101 Budućnost VOLI
(10 October 2020)
Winning streak9 games
Crvena zvezda mts
Losing streak26 games
Koper Primorska
All statistics correct as of May 28, 2021.

The 2020–21 ABA League First Division was the 20th season of the ABA League with 14 teams from Bosnia and Herzegovina, Croatia, Montenegro, Serbia and Slovenia participating in it. The season has started on 2 October 2020.

The season is the first to be played after the previous season was abandoned due to the COVID-19 pandemic. The ABA League Assembly ruled that the 12 teams from the previous season stays in the league and the first two clubs from Second Division were awarded two wild cards.

The Slovenian club Koper Primorska was disqualified from the competition in December 2020 and forfeited 0–20 for all games. Defending champions Crvena zvezda mts won its fifth title following a 3–2 win over Budućnost VOLI in the 2021 Finals.