First-class Bowling for Middlesex in 1991
| Name | Balls | Mdns | Runs | Wkts | BB | Ave | 5wI | 10wM |
| AA Barnett | 646 | 23 | 329 | 10 | 4-119 | 32.90 | 0 | 0 |
| KR Brown | 35 | 1 | 33 | 1 | 1-17 | 33.00 | 0 | 0 |
| NG Cowans | 3253 | 145 | 1500 | 44 | 4-42 | 34.09 | 0 | 0 |
| RM Ellcock | 372 | 15 | 204 | 8 | 4-60 | 25.50 | 0 | 0 |
| JE Emburey | 5397 | 246 | 2170 | 68 | 7-71 | 31.91 | 1 | 0 |
| P Farbrace | 25 | 0 | 64 | 1 | 1-64 | 64.00 | 0 | 0 |
| ARC Fraser | 239 | 12 | 91 | 6 | 4-24 | 15.16 | 0 | 0 |
| MW Gatting | 182 | 5 | 99 | 0 | ||||
| DW Headley | 1977 | 51 | 1258 | 29 | 5-46 | 43.37 | 2 | 0 |
| SP Hughes | 647 | 25 | 388 | 6 | 2-44 | 64.66 | 0 | 0 |
| IJF Hutchinson | 72 | 0 | 29 | 1 | 1-18 | 29.00 | 0 | 0 |
| M Keech | 84 | 6 | 36 | 0 | ||||
| MR Ramprakash | 114 | 3 | 88 | 1 | 1-0 | 88.00 | 0 | 0 |
| MA Roseberry | 84 | 1 | 63 | 0 | ||||
| SA Sylvester | 120 | 2 | 98 | 0 | ||||
| CW Taylor | 882 | 30 | 480 | 18 | 3-35 | 26.66 | 0 | 0 |
| PCR Tufnell | 4810 | 229 | 1927 | 76 | 7-116 | 25.35 | 5 | 1 |
| PN Weekes | 340 | 12 | 188 | 7 | 3-57 | 26.85 | 0 | 0 |
| NF Williams | 3149 | 99 | 1668 | 47 | 5-89 | 35.48 | 1 | 0 |
