| 1966 Cleveland Browns season | |
|---|---|
| General manager | Harold Sauerbrei |
| Head coach | Blanton Collier |
| Home field | Cleveland Stadium |
| Local radio | WERE |
| Results | |
| Record | 9–5 |
| Division place | T–2nd NFL Eastern |
| Playoff finish | Did not qualify |
| Pro Bowlers | LB Johnny Brewer, FL Gary Collins, FB Ernie Green, RG Gene Hickerson, HB Leroy Kelly, QB Frank Ryan, LT Dick Schafrath, LG John Wooten |
| AP All-Pros | HB Leroy Kelly |
The 1966 Cleveland Browns season was the team's 17th season with the National Football League. They finished just 9–5, their worst record since 1962, and failed to make the playoffs for the first time since 1963.