The 2021 VAFA season was the 120th season of the Victorian Amateur Football Association (VAFA), the largest senior community Australian rules football competition in Victoria. The season began on 10 April before it was curtailed on 2 September 2021 without premierships awarded, due to the impact of the COVID-19 pandemic.
No automatic promotion and relegation was applied following the season, and clubs who finished in the bottom two or highest four positions on the ladder would instead have to formally apply on whether to be promoted or relegated for the 2022 season.
This was the first time the VAFA had curtailed a season since 1940, when competition was suspended due to World War II.
The 2020 VAFA season was meant to have been the 120th season of the VAFA.
On 17 March 2020, the VAFA announced that the season would be postponed until 2 May because of the COVID-19 pandemic. However, the season did not resume amid ongoing COVID-19 restrictions, and was officially cancelled on 1 July without a game being played.
The 2021 season began on 10 April, with the senior men's home-and-away season scheduled to end on 28 August ahead of a finals series would be held. The VAFA extended its agreement with RSN 927 in February 2021, with RSN continuing to serve as the official VAFA radio broadcaster.
On 15 August, the VAFA cancelled the remaining home-and-away games, but stated their intention to still hold a finals series. However, following the extension of Melbourne's sixth COVID-19 lockdown, the VAFA announced on 1 September that the season would be abandoned without any premierships awarded.
St Francis Xavier and South Mornington left the VAFA at the end of the 2019 season to join the Southern Football Netball League (SFNL).
Prior to the planned start of the 2020 season, Peninsula Old Boys renamed to Old Peninsula Football Club after introducing a women's team.
Bulleen Templestowe forfeited their round 10 game against MHSOB.