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.

The A-League Men Grand Final is an association football match to determine the champions for an A-League Men season. Played at the end of the finals series, the game has been held annually since 2006.