The 1989–90 Hellenic Football League season was the 37th in the history of the Hellenic Football League, a football competition in England.
| Competition: | Hellenic Football League Premier Division |
| Season: | 1989–90 |
| Winners: | Newport |
| Promoted: | Newport |
| Relegated: | Supermarine |
| Matches: | 306 |
| Total Goals: | 925 |
| Prevseason: | 1988–89 |
| Nextseason: | 1990–91 |
The Premier Division featured 14 clubs which competed in the division last season, along with four new clubs:
Also, Penhill changed name to Swindon Athletic.
| Competition: | Hellenic Football League Division One |
| Season: | 1989–90 |
| Winners: | Carterton Town |
| Promoted: | Carterton Town Milton United |
| Matches: | 240 |
| Total Goals: | 731 |
| Prevseason: | 1988–89 |
| Nextseason: | 1990–91 |
Division One featured 13 clubs which competed in the division last season, along with three new clubs: