| Tourney Name: | AFF Futsal Cup 2021 |
| Other Titles: | เอเอฟเอฟ ฟุตซอล คัพ 2021 |
| Country: |  Thailand |
| City: | Nakhon Ratchasima |
| Dates: | 13–17 September |
| Num Teams: | 5 |
| Sub-Confederations: | 1 |
| Venues: | 1 |
| Cities: | 1 |
| Champion Other: | FreeFire Bluewave Chonburi (2nd title) |
| Second Other: | Port |
| Third Other: | Selangor MAC |
| Matches: | 10 |
| Top Scorer: | Supakorn Sangom (FreeFire Bluewave Chonburi) |
| Player: |  Marcos Vinicius(Port) |
| Fair Play: | Pahang Rangers |
| Prevseason: | 2019 |
| Nextseason: | 2022 |
The 2021 AFF Futsal Cup was the sixth edition of AFF Futsal Cup.[1] The tournament was held in Nakhon Ratchasima, Thailand from 13 to 17 September 2021.[2] [3]
The defending champion was Chonburi Bluewave and they became champions 2 times in a row.