The 1975–76 Sussex County Football League season was the 51st in the history of Sussex County Football League a football competition in England.[1] [2]
| Competition: | Sussex County Football League Division One |
| Season: | 1975–76 |
| Winners: | Burgess Hill Town |
| Relegated: | Arundel Newhaven |
| Matches: | 210 |
| Total Goals: | 644 |
| Prevseason: | 1974–75 |
| Nextseason: | 1976–77 |
Division One featured 13 clubs which competed in the division last season, along with two new clubs, promoted from Division Two:
| Competition: | Sussex County Football League Division Two |
| Season: | 1975–76 |
| Winners: | Selsey |
| Promoted: | Selsey Peacehaven & Telscombe |
| Matches: | 156 |
| Total Goals: | 527 |
| Prevseason: | 1974–75 |
| Nextseason: | 1976–77 |
Division Two featured ten clubs which competed in the division last season, along with three new clubs: