The 2009–10 Northern Counties East Football League season was the 28th in the history of Northern Counties East Football League, a football competition in England.
| Competition: | Northern Counties East Football League Premier Division |
| Season: | 2009–10 |
| Winners: | Bridlington Town |
| Promoted: | Rainworth Miners Welfare |
| Relegated: | Brodsworth Welfare Shirebrook Town |
| Matches: | 380 |
| Total Goals: | 1485 |
| Prevseason: | 2008–09 |
| Nextseason: | 2010–11 |
The Premier Division featured 18 clubs which competed in the previous season, along with two new clubs, promoted from Division One:
| Competition: | Northern Counties East Football League Division One |
| Season: | 2009–10 |
| Winners: | Tadcaster Albion |
| Promoted: | Brighouse Town Tadcaster Albion |
| Matches: | 306 |
| Total Goals: | 1109 |
| Prevseason: | 2008–09 |
| Nextseason: | 2010–11 |
Division One featured 17 clubs which competed in the previous season, along with one new club, relegated from the Premier Division: