| Club: | Chelsea |
| Season: | 1927–28 |
| Manager: | David Calderhead |
| Chairman: | Claude Kirby |
| Stadium: | Stamford Bridge |
| League: | Second Division |
| League Result: | 3rd |
| Cup1: | FA Cup |
| Cup1 Result: | Third round |
| League Topscorer: | Jimmy Thompson (25) |
| Season Topscorer: | Jimmy Thompson (25) |
| Largest Win: | 6–0 v South Shields |
| Largest Loss: | 0–5 v Leeds United |
| 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: | 1926–27 |
| Nextseason: | 1928–29 |
The 1927–28 season was Chelsea Football Club's nineteenth competitive season and fourth consecutive season in the Second Division. The club finished 3rd in the league, narrowly missing out on promotion to the First Division.
See main article: 1927–28 Football League.
See main article: 1927–28 FA Cup.