| Club: | Heart of Midlothian |
| Season: | 1920–21 |
| Manager: | Willie McCartney |
| Stadium: | Tynecastle Park |
| League: | Scottish Football League |
| League Result: | 3rd |
| Cup1 Result: | Semi-final |
| League Topscorer: | |
| Season Topscorer: | |
| Prevseason: | 1919–20 |
| Nextseason: | 1921–22 |
During the 1920–21 season Hearts competed in the Scottish Football League, the Scottish Cup and the East of Scotland Shield.
See main article: 1920–21 Scottish Cup.
See main article: 1920–21 Scottish Football League.