2021 Liga 3 Banten
| Tournament details | |
|---|---|
| Dates | 30 October–1 December 2021 |
| Teams | 22 |
| Defending champions | Persikota Tangerang |
| Final positions | |
| Champions | Persikota Tangerang (3rd title) |
| Runners-up | Farmel |
| Third place | Serpong City |
| Fourth place | Matrix Putra Brother's |
The 2021 Liga 3 Banten (also known as Liga 3 MS Glow For Men PSSI Banten for sponsorship reason) will be the sixth season of Liga 3 Banten as a qualifying round for the national round of the 2021–22 Liga 3.
Persikota Tangerang were the defending champion.