The 2020–21 A-League was the 44th season of national level soccer in Australia, and the 16th since the establishment of the A-League in 2004. The season was started on 28 December 2020 and concluded with the Grand Final on 27 June 2021. The start of the season was later than previous seasons as a result of both the COVID-19 pandemic in Australia and New Zealand, and as part of a gradual shift to move the competition from summer to winter. Wellington Phoenix played the majority of their home matches at Wollongong Showground in Wollongong due to international travel restrictions.

The 2021 A-League Grand Final was the 16th A-League Grand Final, the championship-deciding match of the Australian A-League and the culmination of the 2020–21 season. The match was played between season premiers Melbourne City and the second-placed team and championship holders Sydney FC on 27 June 2021 at AAMI Park in Melbourne.