| Wimbledon Common | 267.74 ha | | — |
| Wimbledon Common | 267.31 ha | | — |
| Mitcham Common | 126.5 ha | | — |
| Morden Park | 34.5 ha | | — |
| Morden Hall Park | 28.93 ha | | — |
| Cannon Hill Common | 20.41 ha | | — |
| Wimbledon Park | 17.91 ha | | — |
| Sir Joseph Hood Memorial Playing Fields | 12.78 ha | | — |
| Cannizaro Park Merton Council | 12.65 ha | | — |
| Figges Marsh | 10.11 ha | | — |
| Ravensbury Park | 8.93 ha | | — |
| Baron Fields | 6.24 ha | | — |
| Three Kings Piece | 6.12 ha | | — |
| Wandle Meadow Nature Park | 5.3 ha | | — |
| Watermeads Nature Reserve | 5.3 ha | | — |
| Morley Park | 4.98 ha | | — |
| Dundonald Recreation Ground London Borough of Merton | 4.82 ha | | — |
| Wandle Park | 4.65 ha | | — |
| Beverley Meads | 4.41 ha | | — |
| Mostyn Gardens | 4.37 ha | | — |
| Moreton Green | 3.95 ha | | — |
| Lavender Park | 3.61 ha | | — |
| Durnsford Road Recreation Ground | 3.55 ha | | — |
| Haydons Road Recreation Ground | 3.46 ha | | — |
| Cottenham Park | 2.84 ha | | — |
| The Canons | 2.58 ha | | — |
| Abbey Recreation Ground | 2.52 ha | | — |
| Bennett's Hole Merton Council | 2.43 ha | | — |
| Rowan Park informal recreation area | 2.41 ha | | — |
| South Park Gardens Merton Council | 2.35 ha | | — |
| John Innes Park | 2.25 ha | | — |
| Colliers Wood Recreation Ground | 1.77 ha | | — |
| Cherry Wood | 1.72 ha | | — |
| Oakleigh Way Recreation Ground | 1.65 ha | | — |
| Rose Garden | 1.63 ha | | — |
| Fishponds Wood | 1.61 ha | | — |
| Railway Path | 1.49 ha | | — |
| Holland Garden | 1.44 ha | | — |
| Brenley Park | 1.3 ha | | — |
| Kendor Gardens | 1.21 ha | | — |
| Vestry Green | 1.1 ha | | — |
| Rowan Road Recreation Ground | 1.04 ha | | — |
| Temple grounds | 1.04 ha | | — |
| St Mary's Glebe | 0.97 ha | | — |
| Long Bolstead Recreation Ground | 0.83 ha | | — |
| Miles Road Recreation Ground | 0.61 ha | | — |
| Farm Bog London Wildlife Trust | 0.58 ha | | — |
| Nelson Gardens | 0.37 ha | | — |
| George Hill Open Space | 0.36 ha | | — |
| Mitcham Fair Green | 0.3 ha | | — |
| Evesham Green | 0.23 ha | | — |
| Vectis Gardens | 0.2 ha | | — |
| Pyl Brook Nature Reserve | 0.18 ha | | — |
| Italian Garden | 0.15 ha | | — |
| Mitcham Community Orchard and Gardens Sustainable Merton | 0.11 ha | | — |
| Waterfall Garden | 0.1 ha | | — |
| Gap Road Gardens | 0.09 ha | | — |
| Garden of Remembrance | 0.06 ha | | — |
| Sunken Garden | 0.06 ha | | — |
| Nelsons Garden | 0.04 ha | | — |
| Rose Garden | 0.03 ha | | — |
| Eastfield Road Gardens | 0.01 ha | | — |
| The Paul Bowness Memorial Gardens | 0.01 ha | | — |
| Myrna Close Nature Reserve | — | | — |