| Club: | Flamengo |
| Season: | 2021–22 |
| Manager: | Gustavo de Conti |
| Stadium: | Maracanãzinho (capacity: 11,800) |
| Chairman: | Rodolfo Landim |
| League: | Campeonato Carioca |
| League Result: | Winners |
| League2: | NBB |
| League2 Result: | Runners-up |
| Cup1: | Super 8 |
| Cup1 Result: | 3rd |
| Cup2: | Champions League |
| Cup2 Result: | Quarterfinals |
| Cup3: | Intercontinental Cup |
| Cup3 Result: | Winners |
| H Pattern B: | _flamengobasketball2122h |
| H Pattern S: | _flamengobasketball2122h |
| A Pattern B: | _flamengobasketball2122a |
| A Pattern S: | _flamengobasketball2122a |
| Prevseason: | 2020–21 |
| Nextseason: | 2022–23 |
The 2021–22 season of Flamengo Basketball is the 102nd season of the club, and the club's 14th in the Novo Basquete Brasil (NBB).