| Ouse Washes (Norfolk) Various;Welney Wildlife Trust | 687.59 ha | | — |
| Welney Wetland Centre Wildfowl and Wetlands Trust | 481.94 ha | | — |
| Sandringham Royal Parkland | 291.55 ha | | — |
| Scolt Head Island | 283.83 ha | | — |
| Roydon Common Norfolk Wildlife Trust | 198.37 ha | | — |
| RSPB Titchwell Marsh RSPB | 141.21 ha | | — |
| Holme Dunes Norfolk Wildlife Trust | 117.53 ha | | — |
| Holme Marsh Norfolk Wildlife Trust | 97.07 ha | | — |
| RSPB Snettisham RSPB | 70.02 ha | | — |
| RSPB Lakenheath Fen RSPB | 53.83 ha | | — |
| Ryston Estate | 51.32 ha | | — |
| Syderstone Common Nature Reserve Norfolk Wildlife Trust | 43.73 ha | | — |
| East Winch Common Norfolk Wildlife Trust | 32.12 ha | | — |
| Ringstead Downs Norfolk Wildlife Trust | 22.04 ha | | — |
| Heacham Park Heacham Hall | 18.03 ha | | — |
| The Walks | 15.21 ha | | — |
| Redwell Marsh Reserve Norfolk Ornithologists Association | 13.51 ha | | — |
| RSPB Lakenheath Fen RSPB | 9.36 ha | | — |
| Wootton Park | 8.74 ha | | — |
| Bradmoor Common - Open Access Land | 6.77 ha | | — |
| Harding's Pits | 4.66 ha | | — |
| Holme Bird Observatory Norfolk Ornithologists’ Association | 4.38 ha | | — |
| Jubilee Park | 4.32 ha | | — |
| Gaywood Park | 3.75 ha | | — |
| Willows Nature Reserve | 3.2 ha | | — |
| Reffley Park | 1.74 ha | | — |
| The Howdale | 1.54 ha | | — |
| Greenland Park | 1.43 ha | | — |
| Duck Pond | 1.24 ha | | — |
| Warren house : Caravan park | 1.16 ha | | — |
| Angel Field (Millennium Green) | 1.12 ha | | — |
| Sandgate Corner | 1.12 ha | | — |
| Saint James’ Park | 1.07 ha | | — |
| Peppers Green Park | 0.96 ha | | — |
| Fincham Nature Reserve | 0.94 ha | | — |
| Parkway Park | 0.94 ha | | — |
| Losinga Road Park | 0.85 ha | | — |
| Swallowfield Road Park | 0.76 ha | | — |
| Queen Elizabeth Avenue Park | 0.73 ha | | — |
| Walled Garden | 0.71 ha | | — |
| Loke Road Park | 0.7 ha | | — |
| Ryston Hall gardens | 0.69 ha | | — |
| Tower Gardens | 0.54 ha | | — |
| North Gardens | 0.5 ha | | — |
| Seagrave Road Park | 0.5 ha | | — |
| Heacham Recreational Park | 0.48 ha | | — |
| Boston Square Sensory Park | 0.47 ha | | — |
| The Chase | 0.47 ha | | — |
| Kettlewell Lane Park | 0.46 ha | | — |
| Dairy Way Park | 0.38 ha | | — |
| Woodland Garden | 0.36 ha | | — |
| South Gate Park | 0.34 ha | | — |
| Burnham Avenue Park | 0.3 ha | | — |
| Memorial Garden | 0.15 ha | | — |
| Old School Court | 0.11 ha | | — |
| Sandpiper Way Park | 0.08 ha | | — |
| Sensory Garden | 0.01 ha | | — |
| Walpole | 0.01 ha | | — |
| Harding's Pits | — | | — |
| Wild Ken Hill | — | | — |