| Inns | HS |
| 199-9 | 46 | Gloucestershire v Middlesex | Brunton Memorial Ground, Radlett | 2022 |
| 196-5 | 42 | Gloucestershire v Somerset | The Cooper Associates County Ground, Taunton | 2024 |
| 191-8 | 47 | Gloucestershire v Sussex | The PROBIZ County Ground, Hove | 2012 |
| 190-5 | 44 | Gloucestershire v Somerset | Seat Unique Stadium, Bristol | 2024 |
| 184-7 | 42* | Gloucestershire v Kent | Brightside Ground, Bristol | 2018 |
| 179-6 | 44 | Gloucestershire v Glamorgan | Sophia Gardens, Cardiff | 2021 |
| 178-8 | 44 | Gloucestershire v Kent | Spitfire Ground, St Lawrence, Canterbury | 2021 |
| 177-7 | 42 | Gloucestershire v Sussex | County Ground, Bristol | 2021 |
| 177-9 | 48 | Gloucestershire v Surrey | College Ground, Cheltenham | 2021 |
| 177-8 | 43 | Gloucestershire v Somerset | The Cooper Associates County Ground, Taunton | 2022 |
| 173 | 36 | Gloucestershire v Somerset | County Ground, Bristol | 2009 |
| 173-6 | 49 | Gloucestershire v Warwickshire | County Ground, Bristol | 2020 |
| 172-7 | 40 | Gloucestershire v Glamorgan | Sophia Gardens, Cardiff | 2019 |
| 171-8 | 43 | Gloucestershire v Middlesex | College Ground, Cheltenham | 2021 |
| 170-6 | 40 | Gloucestershire v Surrey | The Kia Oval, Kennington | 2024 |
| 169-7 | 40 | Gloucestershire v Hampshire | Seat Unique Stadium, Bristol | 2022 |
| 168-9 | 45 | Gloucestershire v Worcestershire | County Ground, New Road, Worcester | 2008 |
| 168-8 | 37 | Gloucestershire v Glamorgan | Brightside Ground, Bristol | 2016 |
| 168-8 | 42 | Gloucestershire v Middlesex | Brunton Memorial Ground, Radlett | 2019 |
| 168-7 | 48 | Gloucestershire v Sussex | The 1st Central County Ground, Hove | 2019 |
| 166-8 | 35 | Gloucestershire v Sussex | Archdeacon Meadow, Gloucester | 2010 |
| 166 | 47 | Gloucestershire v Kent | The Kent County Cricket Ground, Beckenham | 2011 |
| 166 | 43 | Gloucestershire v Worcestershire | County Ground, New Road, Worcester | 2012 |
| 165-8 | 44 | Gloucestershire v Somerset | County Ground, Bristol | 2015 |
| 165-8 | 40 | Gloucestershire v Surrey | The Kia Oval, Kennington | 2019 |
| 165-5 | 34 | Gloucestershire v Sussex | The 1st Central County Ground, Hove | 2023 |
| 163-6 | 45 | Gloucestershire v Middlesex | Merchant Taylors' School Ground, Northwood | 2016 |
| 162-5 | 31 | Gloucestershire v Essex | The Ford County Ground, Chelmsford | 2010 |
| 162-6 | 44* | Gloucestershire v Middlesex | Brightside Ground, Bristol | 2016 |
| 161-9 | 45 | Gloucestershire v Sussex | The Brighton and Hove Jobs County Ground, Hove | 2015 |
| 160-8 | 42 | Gloucestershire v Sussex | Seat Unique Stadium, Bristol | 2024 |
| 158-4 | 46 | Gloucestershire v Warwickshire | County Ground, Bristol | 2008 |
| 156-6 | 43* | Gloucestershire v Hampshire | Archdeacon Meadow, Gloucester | 2011 |
| 156-4 | 42 | Gloucestershire v Kent | College Ground, Cheltenham | 2017 |
| 155-8 | 40* | Gloucestershire v Surrey | The Kia Oval, Kennington | 2011 |
| 154-7 | 35* | Gloucestershire v Kent | County Ground, Bristol | 2014 |
| 154-5 | 39 | Gloucestershire v Surrey | The Kia Oval, Kennington | 2015 |
| 153 | 40 | Gloucestershire v Kent | St Lawrence Ground, Canterbury | 2010 |
| 152-7 | 42 | Gloucestershire v Northamptonshire | County Ground, Bristol | 2009 |
| 152-9 | 45 | Gloucestershire v Somerset | County Ground, Bristol | 2010 |
| 152-7 | 45 | Gloucestershire v Surrey | College Ground, Cheltenham | 2014 |
| 152-3 | 47* | Gloucestershire v Somerset | Brightside Ground, Bristol | 2017 |
| 152 | 45 | Gloucestershire v Middlesex | College Ground, Cheltenham | 2024 |
| 151-8 | 45 | Gloucestershire v Glamorgan | Sophia Gardens, Cardiff | 2023 |
