Highest totals For County Championship Division One, 2023 - Middlesex
Highest totals
Team | Score | Overs | RR | Inns | Opposition | Ground | Result | Match Date | Scorecard |
| 366 | 91.0 | 4.02 | 1 | v Notts | Nottingham | lost | 26 Sep 2023 | First-class | |
| 322/6 | 92.0 | 3.50 | 4 | v Northants | Northwood | draw | 10 Jul 2023 | First-class | |
| 277 | 73.2 | 3.77 | 2 | v Northants | Northwood | draw | 10 Jul 2023 | First-class | |
| 274 | 82.0 | 3.34 | 2 | v Notts | Lord's | won | 20 Apr 2023 | First-class | |
| 272 | 71.3 | 3.80 | 3 | v Surrey | Lord's | lost | 19 Jul 2023 | First-class | |
| 251 | 100.2 | 2.50 | 3 | v Warwickshire | Lord's | lost | 19 Sep 2023 | First-class | |
| 249/6 | 39.0 | 6.38 | 4 | v Notts | Lord's | won | 20 Apr 2023 | First-class | |
| 240 | 71.4 | 3.34 | 3 | v Surrey | The Oval | lost | 11 May 2023 | First-class | |
| 238 | 85.1 | 2.79 | 2 | v Surrey | Lord's | lost | 19 Jul 2023 | First-class | |
| 229 | 58.1 | 3.93 | 2 | v Kent | Lord's | won | 27 Apr 2023 | First-class | |
| 224/6d | 39.0 | 5.74 | 3 | v Notts | Nottingham | lost | 26 Sep 2023 | First-class | |
| 216 | 73.2 | 2.94 | 3 | v Somerset | Lord's | lost | 18 May 2023 | First-class | |
| 210 | 83.0 | 2.53 | 4 | v Essex | Lord's | lost | 6 Apr 2023 | First-class | |
| 209 | 66.5 | 3.12 | 1 | v Surrey | The Oval | lost | 11 May 2023 | First-class | |
| 208 | 70.4 | 2.94 | 3 | v Hampshire | Southampton | lost | 25 Jun 2023 | First-class | |
| 199 | 52.1 | 3.81 | 2 | v Warwickshire | Birmingham | won | 25 Jul 2023 | First-class | |
| 194 | 79.5 | 2.43 | 1 | v Lancashire | Manchester | draw | 10 Sep 2023 | First-class | |
| 179 | 53.5 | 3.32 | 2 | v Essex | Chelmsford | lost | 4 Sep 2023 | First-class | |
| 175 | 52.0 | 3.36 | 2 | v Somerset | Lord's | lost | 18 May 2023 | First-class | |
| 170 | 63.3 | 2.67 | 2 | v Essex | Lord's | lost | 6 Apr 2023 | First-class | |
| 167 | 58.1 | 2.87 | 3 | v Northants | Northampton | lost | 13 Apr 2023 | First-class | |
| 160/3 | 67.0 | 2.38 | 3 | v Lancashire | Manchester | draw | 10 Sep 2023 | First-class | |
| 150 | 56.5 | 2.63 | 2 | v Hampshire | Southampton | lost | 25 Jun 2023 | First-class | |
| 149 | 48.4 | 3.06 | 1 | v Northants | Northampton | lost | 13 Apr 2023 | First-class | |
| 147 | 58.2 | 2.52 | 4 | v Essex | Chelmsford | lost | 4 Sep 2023 | First-class | |
| 121 | 39.5 | 3.03 | 1 | v Warwickshire | Lord's | lost | 19 Sep 2023 | First-class | |
| 97/2 | 25.1 | 3.85 | 4 | v Warwickshire | Birmingham | won | 25 Jul 2023 | First-class | |
| 86/1 | 24.3 | 3.51 | 4 | v Kent | Lord's | won | 27 Apr 2023 | First-class |
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