| Althorp Park | 220.06 ha | | — |
| Upton Country Park | 167.89 ha | | — |
| Delapre Estate | 156.3 ha | | — |
| Brackmills Country Park | 114.33 ha | | — |
| Northampton Washlands | 82.3 ha | | — |
| Daventry Country Park | 72.23 ha | | — |
| Bradlaugh Fields | 66.37 ha | | — |
| Watford Park | 64.22 ha | | — |
| Watford Park | 55.63 ha | | — |
| Abington Park Northampton Town Council | 48.83 ha | 🐕 | — |
| The Racecourse | 47.39 ha | | — |
| Hunsbury Hill Country Park | 34.08 ha | | — |
| Canons Ashby House National Trust | 30.39 ha | | — |
| Chase Park | 28.8 ha | | — |
| Duston Mill Reservoir | 27.84 ha | | — |
| Storton's Pits | 23.43 ha | | — |
| Watermeadows | 23.13 ha | | — |
| Eastfield Park | 19.75 ha | | — |
| Foxfield Country Park | 19.54 ha | | — |
| Foxfield Country Park | 19.54 ha | | — |
| High Wood and Meadow Nature Reserve | 18.57 ha | | — |
| Brackmills Wood | 17.44 ha | | — |
| Lings Wood | 17.2 ha | | — |
| Ladybridge Park | 15.42 ha | | — |
| Kingsthorpe Meadow Nature Reserve | 15.29 ha | | — |
| Thorplands Open Space | 14.83 ha | | — |
| Monksmoor Park | 14.13 ha | | — |
| Brixworth Country Park | 13.5 ha | | — |
| Castle Ashby Gardens | 11.77 ha | | — |
| Grange Park Pocket Park | 11.28 ha | | — |
| Becket's Park | 10.51 ha | | — |
| Dallington Park | 9.5 ha | | — |
| Abington Meadows Nature Reserve | 9.27 ha | | — |
| Cherry Orchard | 8.94 ha | | — |
| St Crispin Park | 8.88 ha | | — |
| Crowfields Common | 8.62 ha | | — |
| Southfields Linear Open Space | 8.62 ha | | — |
| Grangewood Park | 8.39 ha | | — |
| Kingsthorpe Park | 7.53 ha | | — |
| River Walk | 7.41 ha | | — |
| Victoria Park | 7.32 ha | | — |
| Rectory Farm Linear Park | 7.18 ha | | — |
| Wootton Brook Park | 6.97 ha | | — |
| Ecton Brook Linear Park | 6.91 ha | | — |
| Great Billing Open Space (Church Field) | 6.89 ha | | — |
| Far Cotton Recreation Ground | 6.7 ha | | — |
| Penn Valley Park | 6.6 ha | | — |
| Daneholme Park | 6.59 ha | | — |
| Round Spinney Playing Field | 6.04 ha | | — |
| Old Brick Pit NR | 5.64 ha | | — |
| Shires Meadow Park | 5.47 ha | | — |
| Lodge Farm Park | 5.36 ha | | — |
| Belle Baulk Park | 5.35 ha | | — |
| Wildlife Trust Nature Reserve | 5.27 ha | | — |
| Great Billing Park | 5.11 ha | | — |
| Ramsden Corner | 4.85 ha | | — |
| Arbours Park South | 4.54 ha | | — |
| Pocket Park | 4.5 ha | | — |
| Standens Barn Linear Park East | 4.13 ha | | — |
| Brampton Valley Way Linear Park | 4.08 ha | | — |
| Crick Sports Ground | 3.8 ha | | — |
| Cotton End Park Long Buckby Green Spaces | 3.79 ha | | — |
| Deanshanger Pocket Park | 3.65 ha | | — |
| Errington Park | 3.61 ha | | — |
| Brampton Valley Way Linear Park | 3.56 ha | | — |
| Tiffield Pocket Park | 3.33 ha | | — |
| Cygnet Lake Park | 3.32 ha | | — |
| St Davids Recreational Ground | 3.31 ha | | — |
| Lumbertubs Park | 3.18 ha | | — |
| Outer Garden Delapre Abbey | 3.13 ha | | — |
| Standens Barn Linear Park West | 3.13 ha | | — |
| Harpole Playing Fields | 3.06 ha | | — |
| Danehill Spinney | 2.97 ha | | — |
| Ashway Park | 2.9 ha | | — |
| Manorfield Road Open Space | 2.86 ha | | — |
| Brampton Valley Way Linear Park | 2.74 ha | | — |
| Round Spinney Open Space | 2.71 ha | | — |
| Dragonfly Lake Park | 2.69 ha | | — |
| Brampton Valley Way Linear Park | 2.65 ha | | — |
| Crick Sports Ground | 2.65 ha | | — |
| Brampton Valley Way Linear Park | 2.57 ha | | — |
| St James Small Park | 2.46 ha | | — |
| Teal Close | 2.28 ha | | — |
| Village Green | 2.22 ha | | — |
| Crestwood Linear Open Space | 2.21 ha | | — |
| Tavener Fields Park | 2.18 ha | | — |
| Hackleton Pocket Park | 2.15 ha | | — |
| Pocket Park | 2.04 ha | | — |
| Ecton Park Road Open Space | 2.02 ha | | — |
| Grassmere Avenue Linear Open Space | 1.96 ha | | — |
| King's Heath Park | 1.96 ha | | — |
| Green Lane | 1.93 ha | | — |
| Greens Norton Pocket Park | 1.91 ha | | — |
| Langlands Open Space | 1.85 ha | | — |
| Pitsford Football Club | 1.85 ha | | — |
| Blakesley Playing Fields | 1.82 ha | | — |
| Longford Avenue Linear Open Space | 1.69 ha | | — |
| Welford Recreational Park | 1.65 ha | | — |
| Pocket Park | 1.61 ha | | — |
| Bugbrooke Meadow Wildlife Trust | 1.59 ha | | — |
| East Hunsbury Park | 1.51 ha | | — |
| Millers Meadow | 1.51 ha | | — |
| Mendip Park | 1.49 ha | | — |
| Harlestone Heath | 1.45 ha | | — |
| Ouse Valley Park | 1.41 ha | | — |
| Harlestone Heath | 1.37 ha | | — |
| Poppyfields Park | 1.35 ha | | — |
| College Park | 1.34 ha | | — |
| Wildflower Meadow | 1.23 ha | | — |
| Country Park Pinic Area | 1.2 ha | | — |
| St Luke's Field | 1.12 ha | | — |
| The Green | 1.12 ha | | — |
| Southcrest | 1.09 ha | | — |
| Hollowell Pocket Park | 1.01 ha | | — |
| Mill Park (Long Buckby Nature Reserve) Long Buckby Green Spaces | 1.0 ha | | — |
| Canons Ashby House National Trust | 0.88 ha | | — |
| Marefair Heritage Park (under construction) West Northamptonshire Council | 0.37 ha | | — |
| Country Park nature learning area | 0.36 ha | | — |
| Green Court National Trust | 0.16 ha | | — |
| Sawpit Green | 0.12 ha | | — |