| Club: | Celtic |
| Season: | 1920–21 |
| Manager: | Willie Maley |
| Stadium: | Celtic Park |
| League: | Scottish Football League |
| League Result: | 2nd |
| Cup1: | Scottish Cup |
| Cup1 Result: | 4th Round |
| Prevseason: | 1919–20 |
| Nextseason: | 1921–22 |
During the 1920–21 Scottish football season, Celtic competed in the Scottish Football League and the Scottish Cup.[1]
See main article: 1920–21 Scottish Football League.
See main article: 1920–21 Scottish Cup.