Template:2021 National Hurling League Division 3B table
Division champions, promoted to Division 3A
| Team | Pld | W | D | L | F | A | Diff | Pts |
|---|---|---|---|---|---|---|---|---|
 Louth
|
3 | 3 | 0 | 0 | 4-51 | 4-39 | 12 | 6 |
 Cavan
|
3 | 1 | 1 | 1 | 4-51 | 3-52 | 2 | 3 |
 Fermanagh
|
3 | 1 | 1 | 1 | 3-50 | 5-46 | -2 | 3 |
 Leitrim
|
3 | 0 | 0 | 3 | 4-40 | 3-55 | -12 | 0 |
- Lancashire did not compete in 2021 due to the impact of the COVID-19 pandemic on Gaelic games. They returned to Division 3B in 2022.