The 2021 Sudirman Cup was the 17th edition of the Sudirman Cup, the biennial international badminton championship contested by the mixed national teams of the member associations of Badminton World Federation (BWF), since its inception in 1989. The tournament was played in Vantaa, Finland, between 26 September and 3 October 2021. China were the defending champions. They successfully defended their title, lifting the trophy for a record-extending 12th time.