| Horsenden Hill Open Space | 44.57 ha | | — |
| Horsenden Hill Open Space | 34.56 ha | | — |
| Rectory Park | 23.86 ha | | — |
| Warren Farm Nature Reserve https://www.warrenfarmnaturereserve.co.uk | 22.44 ha | | — |
| Elthorne Waterside (Elthorne Rough) | 22.24 ha | | — |
| Perivale Park | 19.82 ha | | — |
| Islip Manor Meadows | 18.71 ha | | — |
| Pear Tree Park Ealing Parks | 18.24 ha | | — |
| Northala Fields Ealing Council | 18.2 ha | | — |
| Pitshanger Park | 17.61 ha | | — |
| Ealing Common | 15.33 ha | | — |
| Perivale Wood Local Nature Reserve Selborne Society | 12.5 ha | | — |
| Ravenor Park | 12.45 ha | | — |
| Walpole Park | 12.28 ha | | — |
| Paradise Fields The Ealing Beaver Project | 10.5 ha | | — |
| Marnham Fields | 10.48 ha | | — |
| Southall Park | 10.32 ha | | — |
| Acton Park London Borough of Ealing | 9.72 ha | | — |
| Lammas Park | 9.62 ha | | — |
| Lime Tree Park | 9.16 ha | | — |
| North Acton Playing Field | 9.11 ha | | — |
| Blondin Park | 8.84 ha | | — |
| Jubilee Meadow and Blackberry Corner | 7.82 ha | | — |
| Earl of Jersey's Field | 6.89 ha | | — |
| Islip Manor Park | 6.73 ha | | — |
| Glade Lane Canalside Park | 6.69 ha | | — |
| Cayton Green Park | 6.49 ha | | — |
| Smiths Farm | 6.31 ha | | — |
| Brent Lodge Park (Bunny Park) | 6.07 ha | | — |
| Lord Halsbury Memorial Playing Field Ealing Council | 6.03 ha | | — |
| Cuckoo Park | 5.56 ha | | — |
| Belvue Park | 4.96 ha | | — |
| Priors Field | 4.96 ha | | — |
| Cleveland Park | 4.89 ha | | — |
| Yeading Brook Meadow | 4.71 ha | | — |
| Bittern's Field | 4.61 ha | | — |
| Greenford Lagoons | 4.11 ha | | — |
| Elthorne Park | 3.94 ha | | — |
| Brentham Meadows | 3.82 ha | | — |
| Mandeville Parkway | 3.68 ha | | — |
| Hanger Hill Park | 3.5 ha | | — |
| Acton Green Common | 3.08 ha | | — |
| Trumpers Field | 2.97 ha | | — |
| Dormers Wells Moated Manor | 2.91 ha | | — |
| Norwood Green | 2.88 ha | | — |
| Brent River Park | 2.87 ha | | — |
| Medlar Fields | 2.67 ha | | — |
| Drayton Green | 2.49 ha | | — |
| Brent Meadow | 2.46 ha | | — |
| Trinity Way Open Space | 2.4 ha | | — |
| Blondin Park Nature Reserve | 2.38 ha | | — |
| Horsenden Lower Thrifts Field | 2.36 ha | | — |
| Springfield Gardens | 2.17 ha | | — |
| Wood End Wireless Station | 2.1 ha | | — |
| Lammas Enclosure | 2.03 ha | | — |
| Montpelier Park | 1.85 ha | | — |
| Grove Farm local nature reserve ealing Council | 1.67 ha | | — |
| Acton Green Common | 1.59 ha | | — |
| Wesley Playing Fields | 1.58 ha | | — |
| Wolf Fields Park | 1.31 ha | | — |
| Ealing Green | 1.29 ha | | — |
| Ridding Lane Open Space | 1.28 ha | | — |
| Haven Green | 1.21 ha | | — |
| Dean Gardens | 1.2 ha | | — |
| Bixley Field | 1.14 ha | | — |
| Manor House Grounds (Phoola Walla Park) | 1.12 ha | | — |
| Westcott Park Community Garden | 0.1 ha | | — |
| North Acton Triangle Ealing Council | 0.04 ha | | — |
| Poets' Corner Community Garden | 0.01 ha | | — |
| Cultivate London @Berrymede Community Gardens Cultivate London | — | 🛝 | — |
| Cultivate London @DIG Hanwell Cultivate London | — | | — |