The 1969–70 Hellenic Football League season was the 17th in the history of the Hellenic Football League, a football competition in England.
| Competition: | Hellenic Football League Premier Division |
| Season: | 1969–70 |
| Winners: | Thame United |
| Relegated: | Chipping Norton Town Hazells |
| Matches: | 306 |
| Total Goals: | 967 |
| Prevseason: | 1968–69 |
| Nextseason: | 1970–71 |
The Premier Division featured 15 clubs which competed in the division last season, along with three new clubs:
| Competition: | Hellenic Football League Division One |
| Season: | 1969–70 |
| Winners: | Clanfield |
| Promoted: | Clanfield Wantage Town |
| Matches: | 342 |
| Total Goals: | 1304 |
| Prevseason: | 1968–69 |
| Nextseason: | 1970–71 |
The Division One featured 16 clubs which competed in the division last season, along with 3 new clubs: