| Lydiard Park Swindon Borough Council | 95.96 ha | | — |
| Coate Water Country Park Swindon Borough Council | 80.64 ha | | — |
| Stanton Country Park Swindon Borough Council | 79.16 ha | | — |
| Barbury Castle Country Park Swindon Borough Council | 69.96 ha | | — |
| Clouts Wood Nature Reserve | 60.18 ha | | — |
| Tadpole Garden Village Nature Park | 45.9 ha | | — |
| Mouldon Hill Country Park | 45.81 ha | | — |
| Pentylands Country Park | 42.47 ha | | — |
| Shaw Forest Park | 37.3 ha | | — |
| Seven Fields Seven Fields Conservation Group | 34.02 ha | | — |
| Lawns Park Swindon Borough Council | 27.4 ha | | — |
| Coate Water Local Nature Reserve | 22.07 ha | | — |
| Shaw Ridge Linear Park | 16.59 ha | | — |
| The Coombes National Trust | 15.63 ha | 🐕 | — |
| Swindon Lagoons | 13.79 ha | | — |
| Eastern Common | 11.56 ha | | — |
| Western Common | 11.39 ha | | — |
| Buckhurst Field South Swindon Parish Council | 10.41 ha | | — |
| Merton Fields Millennium Green Stratton St Margaret Parish Council | 7.28 ha | | — |
| Riverside Park | 7.2 ha | | — |
| Toothill Park | 6.44 ha | | — |
| The Stray | 5.88 ha | | — |
| Town Gardens | 5.27 ha | | — |
| Wichelstowe Lakes | 5.02 ha | | — |
| Queens Park | 4.79 ha | | — |
| GWR Park South Swindon Parish Council | 4.04 ha | | — |
| St Marks Recreation Ground | 3.81 ha | | — |
| Diamond Jubilee Park | 3.45 ha | | — |
| Washpool Washpool Area Restoration Project | 2.67 ha | | — |
| Hagbourne Copse | 2.31 ha | 🐕 | — |
| Brook Park | 1.63 ha | | — |
| Mayenden Park | 1.46 ha | | — |
| Folly Park | 1.43 ha | | — |
| Penhill Park Central Swindon North Parish Council | 1.3 ha | | — |
| East Wichel Park | 1.26 ha | | — |
| Bloomsbury Park | 1.24 ha | | — |
| Clary Road Park | 1.23 ha | | — |
| Rushey Platt Nature Reserve | 1.07 ha | | — |
| Headlands Grove | 0.98 ha | | — |
| Spring Gardens | 0.97 ha | | — |
| Belmont Green | 0.93 ha | | — |
| Eastbury Park | 0.91 ha | | — |
| King George V Field Play Area | 0.81 ha | | — |
| Queen Elizabeth Park | 0.76 ha | | — |
| The Fort Park | 0.76 ha | | — |
| The Secret Garden | 0.61 ha | | — |
| Nine Elms Green | 0.48 ha | | — |
| Ash Meadow | 0.47 ha | | — |
| Walled Garden | 0.47 ha | | — |
| Eastbury Park | 0.34 ha | | — |
| Cavendish Green Play Area | 0.29 ha | | — |
| Savernake Park | 0.28 ha | | — |
| Broadgreen Park | 0.17 ha | | — |
| Rose Garden | 0.15 ha | | — |
| Garden of Reflection | 0.14 ha | | — |
| Sunken Garden | 0.08 ha | | — |
| The Circle | 0.08 ha | | — |
| Mill Lane Community Gardens | 0.02 ha | | — |
| Willow-Brook Gardens | 0.01 ha | | — |
| County Ground Extension | — | | — |
| Garden of Remembrance | — | | — |