First-class Batting and Fielding for Middlesex in 1990 County Championship
| Name | Matches | Inns | Not Out | Runs | HS | Ave | 100 | 50 | Ct | St |
| DL Haynes | 22 | 37 | 5 | 2036 | 255* | 63.62 | 6 | 7 | 14 | |
| MW Gatting | 22 | 36 | 7 | 1685 | 170* | 58.10 | 4 | 9 | 19 | |
| KR Brown | 22 | 33 | 7 | 1416 | 200* | 54.46 | 5 | 8 | 27 | |
| MR Ramprakash | 22 | 38 | 8 | 1327 | 146* | 44.23 | 4 | 5 | 6 | |
| MA Roseberry | 22 | 40 | 3 | 1497 | 135 | 40.45 | 3 | 10 | 21 | |
| JE Emburey | 22 | 31 | 7 | 698 | 111* | 29.08 | 1 | 2 | 31 | |
| PN Weekes | 2 | 2 | 0 | 53 | 51 | 26.50 | 0 | 1 | 1 | |
| PR Downton | 15 | 23 | 1 | 530 | 63 | 24.09 | 0 | 3 | 40 | 2 |
| ARC Fraser | 12 | 11 | 2 | 213 | 92 | 23.66 | 0 | 1 | 3 | |
| PCR Tufnell | 20 | 20 | 9 | 235 | 37 | 21.36 | 0 | 0 | 7 | |
| NF Williams | 19 | 22 | 3 | 390 | 55* | 20.52 | 0 | 2 | 4 | |
| CW Taylor | 2 | 2 | 1 | 13 | 13 | 13.00 | 0 | 0 | 0 | |
| SP Hughes | 15 | 17 | 5 | 109 | 23* | 9.08 | 0 | 0 | 3 | |
| P Farbrace | 7 | 7 | 2 | 45 | 17* | 9.00 | 0 | 0 | 15 | 2 |
| NG Cowans | 16 | 16 | 6 | 81 | 31 | 8.10 | 0 | 0 | 3 | |
| NR Taylor | 1 | 1 | 0 | 0 | 0 | 0.00 | 0 | 0 | 1 | |
| MJ Thursfield | 1 | 0 | 0 |
