| Club: | Chelsea |
| Season: | 1956–57 |
| Manager: | Ted Drake |
| Chairman: | Joe Mears |
| Stadium: | Stamford Bridge |
| League: | First Division |
| League Result: | 13th |
| Cup1: | FA Cup |
| Cup1 Result: | Fourth round |
| League Topscorer: | John McNichol and Ron Tindall (10) |
| Season Topscorer: | John McNichol (11) |
| Largest Win: | 6–2 v Newcastle United |
| Largest Loss: | 0–4 (two matches) |
| Highest Attendance: | |
| Lowest Attendance: | |
| Pattern B1: | _whitecollarplain |
| Pattern So1: | _whitetop |
| Leftarm1: | 0000ff |
| Body1: | 0000ff |
| Rightarm1: | 0000ff |
| Socks1: | 000000 |
| Pattern B2: | _whitecollarplain |
| Pattern So2: | _whitetop |
| Leftarm2: | ff0000 |
| Body2: | ff0000 |
| Rightarm2: | ff0000 |
| Socks2: | 000000 |
| Prevseason: | 1955–56 |
| Nextseason: | 1957–58 |
The 1956–57 season was Chelsea Football Club's forty-third competitive season.