| Liga 3 Banten | |
| Year: | 2021 |
| Dates: | 30 October–1 December 2021 |
| Num Teams: | 22 |
| Defending Champions: | Persikota Tangerang |
| Champions: | Persikota Tangerang[1] |
| Count: | 3 |
| Runner-Up: | Farmel |
| Third: | Serpong City |
| Fourth: | Matrix Putra Brother's |
| Prevseason: | 2019 |
| Nextseason: | 2022 |
The 2021 Liga 3 Banten (also known as Liga 3 MS Glow For Men PSSI Banten for sponsorship reason[2]) 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.
There are 22 teams participated in the league this season.[3]
| Team | Location | |
|---|---|---|
| Anyar Pratama | Serang Regency | |
| Astam | South Tangerang | |
| Bantara | Serang | |
| Banten Jaya | Serang | |
| Banten United | Serang | |
| Billal | South Tangerang | |
| Bintang Junior | South Tangerang | |
| Farmel | Tangerang Regency | |
| Gundala | Serang | |
| Harin | South Tangerang | |
| Jagat | Cilegon | |
| Matrix Putra Brother's | Tangerang Regency | |
| Mavericks | Pandeglang | |
| Persic Cilegon | Cilegon | |
| Persigon Cilegon | Cilegon | |
| Persikota Tangerang | Tangerang | |
| Persipan Pandeglang | Pandeglang | |
| Persitangsel South Tangerang | South Tangerang | |
| Putra Tangerang | Tangerang Regency | |
| Sam's Soccer | South Tangerang | |
| Serang Jaya | Serang | |
| Serpong City | South Tangerang |
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