First-class Batting and Fielding for Middlesex in 1989 County Championship
| Name | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| KR Brown | 7 | 11 | 3 | 431 | 90 | 53.87 | 0 | 3 | 10 | |
| RO Butcher | 10 | 18 | 2 | 467 | 126 | 29.18 | 1 | 1 | 12 | |
| JD Carr | 16 | 30 | 3 | 617 | 153* | 22.85 | 1 | 1 | 18 | |
| NG Cowans | 19 | 22 | 7 | 110 | 21* | 7.33 | 0 | 0 | 2 | |
| PR Downton | 21 | 31 | 3 | 519 | 100 | 18.53 | 1 | 0 | 60 | 5 |
| RM Ellcock | 8 | 6 | 1 | 27 | 9 | 5.40 | 0 | 0 | 3 | |
| JE Emburey | 16 | 23 | 4 | 329 | 77* | 17.31 | 0 | 1 | 14 | |
| ARC Fraser | 16 | 21 | 7 | 214 | 43* | 15.28 | 0 | 0 | 3 | |
| MW Gatting | 17 | 29 | 6 | 1337 | 158* | 58.13 | 4 | 6 | 25 | |
| DL Haynes | 19 | 35 | 5 | 1421 | 206* | 47.36 | 3 | 8 | 12 | |
| SP Hughes | 19 | 26 | 7 | 216 | 31 | 11.36 | 0 | 0 | 4 | |
| IJF Hutchinson | 9 | 17 | 2 | 530 | 177 | 35.33 | 2 | 0 | 13 | |
| JC Pooley | 1 | 1 | 0 | 14 | 14 | 14.00 | 0 | 0 | 0 | |
| MR Ramprakash | 19 | 31 | 4 | 952 | 128 | 35.25 | 1 | 7 | 11 | |
| MA Roseberry | 17 | 28 | 4 | 703 | 79 | 29.29 | 0 | 5 | 12 | |
| JF Sykes | 2 | 3 | 0 | 27 | 19 | 9.00 | 0 | 0 | 1 | |
| PCR Tufnell | 13 | 11 | 3 | 54 | 12 | 6.75 | 0 | 0 | 9 | |
| NF Williams | 13 | 17 | 4 | 253 | 69* | 19.46 | 0 | 1 | 4 |
