The 1977–78 season was the seventh in the history of Essex Senior Football League, a football competition in England.[1]
The league featured 16 clubs which competed in the league last season, no new clubs joined the league this season.
Basildon United were champions, winning their second Essex Senior League title in a row.
| Competition: | Essex Senior Football League |
| Season: | 1977–78 |
| Winners: | Basildon United |
| Matches: | 240 |
| Total Goals: | 700 |
| Prevseason: | 1976–77 |
| Nextseason: | 1978–79 |