The 1985–86 Combined Counties Football League season was the eighth in the history of the Combined Counties Football League, a football competition in England.
The league was won by British Aerospace (Weybridge) for the second time. Newcomers Chertsey Town finished as runners-up and were promoted back to the Isthmian League.
| Competition: | Combined Counties Football League |
| Season: | 1985–86 |
| Winners: | British Aerospace (Weybridge) |
| Promoted: | Chertsey Town |
| Matches: | 342 |
| Total Goals: | 1092 |
| Prevseason: | 1984–85 |
| Nextseason: | 1986–87 |
The league remained at 19 clubs after Southwick were promoted to the Isthmian League and one new club joined: