| Blenheim Park | 970.38 ha | | — |
| Eynsham Park | 320.99 ha | | — |
| Heythrop Park | 157.2 ha | | — |
| Great Tew Park | 68.79 ha | | — |
| Rousham Gardens | 34.79 ha | | — |
| Standlake Common Nature Reserve Lower Windrush Valley Project | 27.86 ha | | — |
| Foxholes Nature Reserve Berks, Bucks & Oxon Wildlife Trust | 24.35 ha | | — |
| Witney Lake and Country Park Witney Town Council | 22.11 ha | | — |
| Rushy Common Nature Reserve Smiths Bletchington | 22.06 ha | | — |
| Kilkenny Lane Country Park | 20.69 ha | | — |
| North Leigh Common | 15.3 ha | | — |
| Woodstock Town Watermeadows | 15.02 ha | | — |
| Wigwell Nature Reserve | 11.21 ha | | — |
| Mary Ellis Country Park - South | 9.15 ha | | — |
| Foxburrow Wood | 9.13 ha | | — |
| Willow Meadows | 8.97 ha | | — |
| Tar Lakes Smiths Bletchington | 8.28 ha | | — |
| Mary Ellis Country Park - North | 6.9 ha | | — |
| Wychwood wild garden | 5.68 ha | | — |
| Eynsham Wood Woodland Trust | 5.4 ha | | — |
| Deer Park Wood Witney Woodland Volunteers | 5.0 ha | | — |
| Deer Park South Witney Woodland Volunteers | 3.86 ha | | — |
| Grimesmead | 3.57 ha | | — |
| Mill Field Charlbury Town Council | 3.56 ha | | — |
| Witney Lake Nature Reserve Witney Town Council | 2.97 ha | | — |
| Walled Gardens | 2.93 ha | | — |
| Westwell Gorse BBOWT | 2.41 ha | | — |
| Milton Village Green | 2.38 ha | | — |
| Glyme Valley BBOWT | 2.28 ha | | — |
| Bladon Playground | 2.12 ha | | — |
| Formal Gardens | 1.97 ha | | — |
| The Common | 1.67 ha | | — |
| Kelmscott Manor Park and Garden Sciety of Antiquaries of London | 1.21 ha | | — |
| Walled Garden | 1.1 ha | | — |
| Water Terraces | 0.98 ha | | — |
| Eton Close Play Area | 0.95 ha | | — |
| Windrush Place Playground | 0.88 ha | | — |
| Walled Garden | 0.83 ha | | — |
| Wood Green | 0.78 ha | | — |
| Church Green | 0.72 ha | | — |
| Secret Garden | 0.59 ha | | — |
| Italian Garden | 0.54 ha | | — |
| Blenheim Farm Nature Reserve Berkshire, Buckinghamshire and Oxfordshire Wildlife Trust | 0.51 ha | | — |
| Old Woodstock Line Nature Reserve | 0.42 ha | | — |
| Brize Meadow Play Area | 0.41 ha | | — |
| Marlborough Maze | 0.39 ha | | — |
| Cornish Road Park | 0.3 ha | | — |
| Unterhaching Park | 0.3 ha | | — |
| Roundel | 0.26 ha | | — |
| Village Green Filkins and Broughton Poggs Parish Council | 0.24 ha | | — |
| New Gardens Cottage | 0.19 ha | | — |
| Rose Garden | 0.19 ha | | — |
| Beaconsfield Cottage | 0.13 ha | | — |
| Churchill Memorial Garden | 0.12 ha | | — |
| Chadlington Park | 0.11 ha | | — |
| Fieldmere Close | 0.08 ha | | — |
| Village Paddock | 0.08 ha | | — |
| millennium garden | 0.06 ha | | — |
| Hanborough Park Play Area | 0.04 ha | | — |
| The Plough (Pub Garden) | 0.04 ha | | — |
| Village Hall Garden | 0.04 ha | | — |
| Red Pandas | 0.03 ha | | — |
| Bladon Green | 0.02 ha | | — |
| Bee Lovelly | 0.01 ha | | — |