The 1934–35 season was the 26th in the history of the Isthmian League, an English football competition.
Wimbledon were champions, winning their third Isthmian League title.
| Competition: | Isthmian League |
| Season: | 1934–35 |
| Winners: | Wimbledon |
| Matches: | 182 |
| Total Goals: | 698 |
| Prevseason: | 1933–34 |
| Nextseason: | 1935–36 |