The 1987–88 Sussex County Football League season was the 63rd in the history of Sussex County Football League a football competition in England.[1] [2]
| Competition: | Sussex County Football League Division One |
| Season: | 1987–88 |
| Winners: | Pagham |
| Relegated: | Horsham YMCA |
| Matches: | 240 |
| Total Goals: | 706 |
| Prevseason: | 1986–87 |
| Nextseason: | 1988–89 |
Division One featured 14 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: | 1987–88 |
| Winners: | Langney Sports |
| Promoted: | Langney Sports Oakwood |
| Relegated: | Wigmore Athletic |
| Matches: | 210 |
| Total Goals: | 661 |
| Prevseason: | 1986–87 |
| Nextseason: | 1988–89 |
Division Two featured eleven clubs which competed in the division last season, along with four new clubs.
| Competition: | Sussex County Football League Division Three |
| Season: | 1987–88 |
| Winners: | Midway |
| Promoted: | Broadbridge Heath |
| Matches: | 182 |
| Total Goals: | 634 |
| Prevseason: | 1986–87 |
| Nextseason: | 1988–89 |
Division Three featured ten clubs which competed in the division last season, along with four new clubs: