| Roydon Woods Nature Reserve Hampshire & Isle of Wight Wildlife Trust | 377.46 ha | | — |
| Martin Down National Nature Reserve | 338.56 ha | | — |
| Blashford Lakes Nature Reserve Hampshire and Isle of Wight Wildlife Trust | 173.46 ha | | — |
| Lower Test Nature Reserve Hampshire and Isle of Wight Wildlife Trust | 141.34 ha | | — |
| Pennington Marshes | 133.87 ha | | — |
| Keyhaven & Pennington Marshes Nature Reserve | 123.44 ha | | — |
| Exbury Gardens | 101.71 ha | | — |
| Testwood Lakes | 55.4 ha | | — |
| Poors Common SSSI | 51.1 ha | | — |
| Kingston Great Common National Nature Reserve Natural England | 49.02 ha | 🐕 | — |
| Lymington River Reedbeds SSSI Hampshire and Isle of Wight Wildlife Trusts | 41.47 ha | | — |
| Woodside Park and Gardens | 20.8 ha | | — |
| Barton Common | 17.31 ha | | — |
| Hythe Spartina Marsh Nature Reserve Hampshire & I.OW. Wildlife Trust | 17.06 ha | | — |
| Copythorne Common Nature Reserve Hampshire & Isle of Wight Wildlife Trust | 15.81 ha | | — |
| Bolderwood Arboretum Forestry England | 14.4 ha | | — |
| Lepe Country Park Hampshire County Council | 9.36 ha | | — |
| Pennington Common | 8.48 ha | | — |
| Salterns Marsh | 8.32 ha | | — |
| Ashley Recreation Ground | 7.04 ha | | — |
| Toyd Down and Quarry (SSSI) | 6.32 ha | | — |
| Furzey Gardens | 5.22 ha | | — |
| Lepe House Gardens Lepe Estate | 5.16 ha | | — |
| Holbury Manor Park | 4.91 ha | | — |
| Cadland House Cadland Estate | 4.73 ha | | — |
| Inchmery House | 4.69 ha | | — |
| Goatee Shore | 4.37 ha | | — |
| Testwood Recreation Ground | 3.83 ha | | — |
| Blackwater Arboretum Forestry Commission | 3.61 ha | | — |
| Ewart Recreation Ground | 3.38 ha | | — |
| Eaglehurst | 2.88 ha | | — |
| Bickerley Common | 2.84 ha | | — |
| Shore Road Recreation Ground | 2.65 ha | | — |
| Testvale Park | 1.79 ha | | — |
| Golden Hill Hordle Parish Council | 1.78 ha | 🐕 | — |
| New Milton Recreation Ground | 1.68 ha | | — |
| Myrtle Park | 1.56 ha | | — |
| King's House Garden | 1.42 ha | | — |
| Grove Gardens | 1.2 ha | | — |
| Bath Road Recreation Ground | 1.18 ha | | — |
| Ashurst Recreation Ground | 1.13 ha | | — |
| Hangar Farm Park | 1.07 ha | | — |
| Noads Way Play Area | 1.02 ha | | — |
| The Raymond Brown Nature Reserve | 1.02 ha | | — |
| Emsworth Road Recreation Ground New Forest District Council | 0.39 ha | | — |
| The Walled Garden Priestlands School | 0.22 ha | | — |
| Beer Garden | 0.18 ha | | — |
| Bramtoco Park Hampshire County Council | 0.03 ha | | — |
| Forest Park School Sensory Garden Forest Park School | 0.02 ha | | — |
| Bramtoco Park Hampshire County Council | — | | — |
| Linwood Wildlife Reserve Hampshire & Isle of Wight Wildlife Trust | — | | — |