| Season | 1965–66 |
|---|---|
| Champions | Leytonstone |
| Matches played | 380 |
| Goals scored | 1,443 (3.8 per match) |
|
← 1964–65
1966–67 →
|
|
The 1965–66 season was the 51st in the history of the Isthmian League, an English football competition.
Leytonstone were champions, winning their ninth Isthmian League title.
Sources: FCHD, RSSSF
1) The system of using goal average to separate two teams tied on points was used up until the 1976–77 season.
2) The points system: 2 points for a win, 1 point for a draw and 0 points for losing.
3) Rules for classification: 1) points; 2) goal average.