List of Sites of Special Scientific Interest in Northamptonshire

The following is a list of Sites of Special Scientific Interest in Northamptonshire. For other counties, see List of SSSIs by Area of Search.

• Alder Wood And Meadow
• Aldwincle Marsh
• Ashton Wold
• Badby Wood
• Badsaddle, Withmale Park And Bush Walk Woods
• Banhaw, Spring And Blackthorn's Woods
• Birch Spinney And Mawsley Marsh
• Blisworth Rectory Farm Quarry
• Bosworth Mill Meadow
• Bozeat Meadow
• Bucknell Wood Meadows
• Bugbrooke Meadows
• Bulwick Meadows
• Collyweston Great Wood And Easton Hornstocks
• Collyweston Quarries
• Collyweston Slate Mine
• Coombe Hill Hollow
• Cowthick Quarry
• Cranford St John
• Dungee Corner Meadow
• Everdon Stubbs
• Finedon Top Lodge Quarry
• Geddington Chase
• Glapthorn Cow Pasture
• Hardwick Lodge Meadow
• Helmdon Disused Railway
• High Wood And Meadow
• Irchester Old Lodge Pit
• King's Cliffe Banks
• Mantles Heath
• Mill Crook
• Old Sulehay Forest
• Pipewell Woods
• Pitsford Reservoir
• Plumpton Pasture
• Racecourse Farm Fields
• Ramsden Corner Plantation
• River Ise And Meadows
• Roade Cutting
• Salcey Forest
• Short Wood
• Southfield Farm Marsh
• Stoke & Bowd Lane Woods
• Sudborough Green Lodge Meadows
• Syresham Marshy Meadows
• Thrapston Station Quarry
• Titchmarsh Duck Decoy
• Titchmarsh Meadow
• Twywell Gullet
• Upper Cherwell At Trafford House
• Upper Nene Valley Gravel Pits
• Wadenhoe Marsh And Achurch Meadow
• Wakerley Spinney
• Weldon Park
• Whittlewood Forest
• Wollaston Meadows
• Yardley Chase