| Club: | Chelsea |
| Season: | 1930–31 |
| Manager: | David Calderhead |
| Chairman: | Claude Kirby |
| Stadium: | Stamford Bridge |
| League: | First Division |
| League Result: | 12th |
| Cup1: | FA Cup |
| Cup1 Result: | Quarter-finals |
| League Topscorer: | Hughie Gallacher (14) |
| Season Topscorer: | Hughie Gallacher (14) |
| Largest Win: | 5–0 v Sunderland 5–0 v Grimsby Town |
| Largest Loss: | 2–6 v Birmingham 2–6 v Derby County |
| Highest Attendance: | |
| Lowest Attendance: | |
| Pattern B1: | _chelsea1907h |
| Pattern So1: | _2bluestripes |
| Leftarm1: | 0000FF |
| Body1: | FFFFFF |
| Rightarm1: | 0000FF |
| Shorts1: | ffffFF |
| Socks1: | 000000 |
| Pattern B2: | _chelsea1905a |
| Pattern So2: | _2_stripes_white |
| Leftarm2: | FFFFFF |
| Body2: | FFFFFF |
| Rightarm2: | FFFFFF |
| Shorts2: | FFFFFF |
| Socks2: | 0000ff |
| Prevseason: | 1929–30 |
| Nextseason: | 1931–32 |
The 1930–31 season was Chelsea Football Club's twenty-second competitive season. It was the club's first season back in the top-flight after a six-year absence.