The 2004–05 Hellenic Football League season was the 52nd in the history of the Hellenic Football League, a football competition in England.
| Competition: | Hellenic Football League Premier Division |
| Season: | 2004–05 |
| Winners: | Highworth Town |
| Relegated: | Bicester Town Wootton Bassett Town Pewsey Vale |
| Matches: | 462 |
| Total Goals: | 1359 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
Premier Division featured 18 clubs which competed in the division last season, along with four new clubs:
| Competition: | Hellenic Football League Division One East |
| Season: | 2004–05 |
| Winners: | Eton Wick |
| Matches: | 306 |
| Total Goals: | 1094 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
Division One East featured 14 clubs which competed in the division last season, along with four clubs:
| Competition: | Hellenic Football League Division One West |
| Season: | 2004–05 |
| Winners: | Shrivenham |
| Promoted: | Shrivenham Kidlington |
| Matches: | 306 |
| Total Goals: | 1099 |
| Prevseason: | 2003–04 |
| Nextseason: | 2005–06 |
Division One West featured 15 clubs which competed in the division last season, along with three new clubs: