| Club: | Chelsea |
| Season: | 1980–81 |
| Manager: | Geoff Hurst |
| Chairman: | Brian Mears |
| Stadium: | Stamford Bridge |
| League: | Second Division |
| League Result: | 12th |
| Cup1: | FA Cup |
| Cup1 Result: | Third round |
| Cup2: | League Cup |
| Cup2 Result: | Second round |
| League Topscorer: | Colin Lee (15) |
| Season Topscorer: | Colin Lee (16) |
| Largest Win: | 6–0 v Newcastle United |
| Largest Loss: | 0–4 v West Ham United |
| Highest Attendance: | |
| Lowest Attendance: | |
| Pattern La1: | _chelsea1981h |
| Pattern B1: | _chelsea1981h |
| Pattern Ra1: | _chelsea1981h |
| Pattern Sh1: | _chelsea1981h |
| Leftarm1: | _chelsea1981h |
| Shorts1: | 0000FF |
| Pattern La2: | _chelsea1981a |
| Pattern B2: | _chelsea1981a |
| Pattern Ra2: | _chelsea1981a |
| Leftarm2: | FFFF00 |
| Body2: | FFFF00 |
| Rightarm2: | FFFF00 |
| Shorts2: | FFFF00 |
| Socks2: | FFFF00 |
| Prevseason: | 1979–80 |
| Nextseason: | 1981–82 |
The 1980–81 season was Chelsea Football Club's sixty-seventh competitive season.