The 1973–74 Hellenic Football League season was the 21st in the history of the Hellenic Football League, a football competition in England.
| Competition: | Hellenic Football League Premier Division |
| Season: | 1973–74 |
| Winners: | Moreton Town |
| Relegated: | Fairford Town Pressed Steel Hazells |
| Matches: | 272 |
| Total Goals: | 858 |
| Prevseason: | 1972–73 |
| Nextseason: | 1974–75 |
The Premier Division featured 13 clubs which competed in the division last season, along with four new clubs, promoted from Division One:
| Competition: | Hellenic Football League Division One |
| Season: | 1973–74 |
| Winners: | Cirencester Town |
| Promoted: | Cirencester Town Oxford City reserves Newbury Town Rivet Sports |
| Prevseason: | 1972–73 |
| Nextseason: | 1974–75 |
The Division One featured 11 clubs which competed in the division last season, along with 10 new clubs:
2 clubs relegated from the Premier Division:
7 clubs promoted from Division Two:
Plus: