| Club: | Chelsea |
| Season: | 1988–89 |
| Manager: | Bobby Campbell |
| Chairman: | Ken Bates |
| Stadium: | Stamford Bridge |
| League: | Second Division |
| League Result: | 1st |
| Cup1: | FA Cup |
| Cup1 Result: | Third round |
| Cup2: | League Cup |
| Cup2 Result: | Second round |
| Cup3: | Full Members Cup |
| Cup3 Result: | Third round |
| League Topscorer: | Kerry Dixon (25) |
| Season Topscorer: | Kerry Dixon (28) |
| Largest Win: | 7–0 v Walsall |
| Largest Loss: | 1–4 (two matches) |
| Highest Attendance: | |
| Lowest Attendance: | |
| Pattern B1: | _chelsea1987h |
| Pattern La1: | _chelsea1987h |
| Pattern Ra1: | _chelsea1987h |
| Leftarm1: | 0000FF |
| Body1: | 0000FF |
| Rightarm1: | 0000FF |
| Shorts1: | 0000FF |
| Socks1: | 0000FF |
| Pattern B2: | _chelsea1986a |
| Pattern Ra2: | _chelsea1986a |
| Pattern La2: | _chelsea1986a |
| Shorts2: | 20B2AA |
| Socks2: | 20B2AA |
| Prevseason: | 1987–88 |
| Nextseason: | 1989–90 |
The 1988–89 season was Chelsea Football Club's seventy-fifth competitive season. The club returned to the First Division at the first attempt by winning the Second Division championship. Due to crowd trouble following the Football League play-off match against Middlesbrough the previous season, the Stamford Bridge terraces were closed for the first six home games of the season.