The 1983–84 season was the 13th in the history of Essex Senior Football League, a football competition in England.[1]
The league featured 17 clubs which competed in the league last season, no new clubs joined the league this season.
Heybridge Swifts were champions, winning their third Essex Senior League title in a row and were promoted to the Isthmian League, becoming the first Essex Senior League club promoted to a higher level league.
| Competition: | Essex Senior Football League |
| Season: | 1983–84 |
| Winners: | Heybridge Swifts |
| Promoted: | Heybridge Swifts |
| Matches: | 271 |
| Total Goals: | 810 |
| Prevseason: | 1982–83 |
| Nextseason: | 1984–85 |