The 2020–21 NBL season was the 43rd season of the National Basketball League since its establishment in 1979. A total of nine teams contested in the 2020–21 season. The regular season was played between January and June 2021, followed by a post-season in June 2021.
Australian broadcast rights to the season were held by SBS Viceland in the second year of a two-year deal. All games were available live and free on streaming platforms such as SBS On Demand. ESPN also broadcast select games, including all games after 7.30pm AEDT.[1] In New Zealand, Sky Sport were the official league broadcaster.[2] The NBL continued broadcasting games online on Twitch in the second year of a two-year deal.[3]
During the off-season the Illawarra Hawks were renamed to The Hawks after the new ownership group announced they wanted to expand out from Illawarra and into the wider region.[5]
On 9 February 2021, the NBL reinstated the Illawarra Hawks name following an increase in support from the local community.[6]
Free agency negotiations were delayed until 15 July 2020, after the NBL and the Australian Basketball Players' Association postponed the original start date of 30 March 2020 due to the effects of the COVID-19 pandemic.[7][8] On 17 April 2020, the NBL, the Australian Basketball Players' Association and the nine clubs reached an agreement in response to the financial pressure caused by the pandemic, which reduced the salaries of players signed for the 2020–21 season, lowered the full-time roster positions from 11 to 10 players (plus a Next Star slot) and from three import slots to two import slots.[9]
The regular season which was due to begin in early October, began on 15 January 2021 after it was delayed twice due to the COVID-19 pandemic.[11] It consisted of 162 games spread across 21 rounds, with the final game being played on 8 June 2021.
The 2021 NBL Finals was played in June 2021, consisting of two best-of-three semi-final series and a best-of-five Grand Final series. In the semi-finals, the higher seed hosted the first and third games. In the Grand Final, the higher seed usually hosts the first, third and fifth games. However, due to the border restrictions by the Western Australian state government, Perth Wildcats (the lower seed) hosted the first two games, while Melbourne United hosted the third game (and would have also hosted the fourth and fifth games had they not already won the series by the third game).