| Club: | Celtic |
| Season: | 1890–91 |
| Mgrtitle: | Manager |
| Stadium: | Celtic Park |
| League Result: | 3rd |
| Cup1: | Scottish Cup |
| Cup1 Result: | Sixth round |
| Cup2: | Glasgow Cup |
| Cup2 Result: | Winners |
| Cup3: | Scottish League Charity Competition |
| Cup3 Result: | Runners-up |
| Prevseason: | 1889–90 |
| Nextseason: | 1891–92 |
The 1890–91 season was the third season of football by Celtic, this marked the first season where Celtic took part in the newly formed Scottish Football League, they also competed in the Scottish Cup, Scottish League Charity Competition and Glasgow Cup.
See main article: 1890–91 Scottish Football League.
See main article: 1890–91 Scottish Cup.