Thailand won the tournament by a 6–2 victory in the two-legged final against Indonesia to secure their sixth title.

[7][8] The AFF Suzuki Cup 2020 was hosted in a centralized venue due to the ongoing COVID-19 pandemic in Southeast Asia.

The organizers preferred to hold the tournament under its original format, which featured two-leg home-and-away games.

[13] Nine teams automatically qualified to the AFF Championship final tournament; they were separated into their respective pots based on their performance of the last two editions.

[15] Due to non-compliance with conditions set by the World Anti-Doping Agency (WADA), Thailand and Indonesia were not allowed to be represented by their national flags.

[23] At the time of the draw, the identity of the national team that secured qualification was unknown, as it was supposed to be contested between Brunei and Timor Leste.

In addition, 4 Indonesian players (Elkan Baggott, Victor Igbonefo, Rizky Ridho and Rizky Dwi Febrianto) were barred from the 2nd leg of the Indonesia-Thailand Final on 1 January 2022 for breaching COVID-19 safety measures by leaving the team hotel without authorisation.