2020–21 NBL regular season

The regular season of the 2020–21 NBL season, the 43rd season of the National Basketball League (Australia), started in mid-January, with nine teams participating.

Round 16
On 15 April 2021, the NBL announced that Round 16 would be the league's heritage round, with each team wearing their own heritage jersey.

Round 20
On 18 May 2021, Round 20 was announced as the league's annual Indigenous Round with each team wearing jersey's featuring indigenous artwork inspired by their local area.