The 2021 Thailand Champions Cup was the 5th Thailand Champions Cup, an annual football match contested by the winners of the previous season's Thai League 1 and Thai FA Cup competitions. It was sponsored by Daikin, and known as the Daikin Thailand Champions Cup () for sponsorship purposes. The match was played on 1 September 2021 at the 700th Anniversary of Chiangmai Stadium in Mae Rim, Chiangmai and contested by 2020–21 Thai League 1 champions BG Pathum United, and Chiangrai United as the champions of the 2020–21 Thai FA Cup. It has live broadcast on Channel 5 HD and AIS Play.
Qualified teams
Match
Details
Assistant referees: Rachen Srichai Worapong Prasertsri Fourth official: Natee Chusuwan Assistant VAR: Torpong Somsing Rachan Dawangpa Match Commissioner: Khajorn Treesophanakorn Referee Assessor: Preecha Kangram General Coordinator: Narubet Kietprasert