The 2002–03 season was the 32nd in the history of Essex Senior Football League a football competition in England.[1]
The league featured 15 clubs which competed in the league last season, along with two new clubs:
Enfield Town were champions, winning their first Essex Senior League title.
| Competition: | Essex Senior Football League |
| Season: | 2002–03 |
| Winners: | Enfield Town |
| Matches: | 272 |
| Total Goals: | 937 |
| Prevseason: | 2001–02 |
| Nextseason: | 2003–04 |