| Club: | Heart of Midlothian |
| Season: | 1965–66 |
| Manager: | Tommy Walker |
| Stadium: | Tynecastle Park |
| League: | Scottish First Division |
| League Result: | 7th |
| Cup1 Result: | Round 3 |
| Cup2 Result: | Group Stage |
| Cup3 Result: | Round 3 |
| League Topscorer: | |
| Season Topscorer: | |
| Prevseason: | 1964–65 |
| Nextseason: | 1966–67 |
During the 1965–66 season Hearts competed in the Scottish First Division, the Scottish Cup, the Scottish League Cup, the Inter-Cities Fairs Cup and the East of Scotland Shield.
See main article: East of Scotland Shield.
See main article: 1965–66 Inter-Cities Fairs Cup.
See main article: 1965–66 Scottish League Cup.
See main article: 1965–66 Scottish Cup.
See main article: 1965–66 Scottish First Division.