This is a list of the Sites of Special Scientific Interest (SSSIs) in Northumberland

Northumberland

Northumberland is the northernmost ceremonial county and a unitary district in North East England. For Eurostat purposes Northumberland is a NUTS 3 region and is one of three boroughs or unitary districts that comprise the "Northumberland and Tyne and Wear" NUTS 2 region...

. Note that English Nature

English Nature

English Nature was the United Kingdom government agency that promoted the conservation of wildlife, geology and wild places throughout England between 1990 and 2006...

, the designating body for SSSIs in England

England

England is a country that is part of the United Kingdom. It shares land borders with Scotland to the north and Wales to the west; the Irish Sea is to the north west, the Celtic Sea to the south west, with the North Sea to the east and the English Channel to the south separating it from continental...

, uses the 1974-1996 county system

Metropolitan and non-metropolitan counties of England

Metropolitan and non-metropolitan counties are one of the four levels of subdivisions of England used for the purposes of local government outside Greater London. As originally constituted, the metropolitan and non-metropolitan counties each consisted of multiple districts, had a county council and...

, and this list follows the same approach. Some sites you may expect to find here could therefore be in the County Durham or Tyne and Wear lists.

For other counties, see List of SSSIs by Area of Search.

• Allen Confluence Gravels
• Allendale Moors
• Allolee To Walltown
• Alnmouth Saltmarsh And Dunes
• Arcot Hall Grasslands And Ponds
• Aules Hill Meadows
• Bamburgh Coast And Hills
• Bamburgh Dunes
  Bamburgh Dunes
  Bamburgh Dunes are a region of coastal sand dunes with an area of over 40 hectares situated around the village of Bamburgh in Northumberland, England. The dunes, which stand in the shadow of the impressive Bamburgh Castle, have been a Site of Special Scientific Interest since 1995 and are part of...
  
  
• Barelees Pond
• Barrow Burn Meadows
• Barrow Meadow
• Bavington Crags
• Beltingham River Shingle
• Billsmoor Park And Grasslees Wood
• Brada Hill
• Bradford Kames
• Briarwood Banks
• Brunton Bank Quarry
• Burnfoot River Shingle And Wydon Nabb
• Campfield Kettle Hole
• Castle Point To Cullernose Point
• Catton Lea Meadow
• Close House Riverside
• College Valley Woodlands
• Colour Heugh And Bowden Doors
• Coquet Island
  Coquet Island, England
  Coquet Island is a small island of about , situated off Amble on the Northumberland coast, northeast England.The Island is owned by the Duke of Northumberland...
  
  
• Corbridge Limestone Quarry
• Cottonshope Head Quarry
• Cresswell And Newbiggin Shores
• Cresswell Ponds
• Darras Hall Grassland
• Derwent Gorge and Horsleyhope Ravine
  Derwent Gorge and Horsleyhope Ravine
  Derwent Gorge and Horsleyhope Ravine is a Site of Special Scientific Interest in the Derwentside district of north County Durham and the Tynedale district of south Northumberland, England...
  
   (part is in County Durham
  County Durham
  County Durham is a ceremonial county and unitary district in north east England. The county town is Durham. The largest settlement in the ceremonial county is the town of Darlington...
  
  )
• Durtrees Burn Grassland
• Fallowfield Mine
• Fallowlees Flush
• Farne Islands
  Farne Islands
  The Farne Islands are a group of islands off the coast of Northumberland, England. There are between 15 and 20 or more islands depending on the state of the tide. They are scattered about 2.5–7.5 km distant from the mainland, divided into two groups, the Inner Group and the Outer Group...
  
  
• Ford Moss
  Ford Moss
  Ford Moss is a Site of Special Scientific Interest, containing a Scheduled Ancient Monument, located 12 miles south-west of Berwick-upon-Tweed, Northumberland, England...
  
  
• Geltsdale & Glendue Fells
• Glebe Quarry
• Greenhaugh Meadow
• Greenleighton Quarry
• Gunnerton Nick
• Hadston Links
• Haggburn Gate
• Hannah's Hill, Harehope
• Harbottle Moors
• Hareshaw Dene
• Harthope Burn
• Hartley Cleugh
• Hawthorn Cottage Pasture
• Heatheryburn Bank
• Hesleyside Park
• Hexhamshire Moors
  Hexhamshire Moors
  Hexhamshire Moors is a Site of Special Scientific Interest covering an extensive area of moorland in the Wear Valley district of north-west County Durham and the Tynedale district of south-west Northumberland, England....
  
  
• High Knock Shield Meadow
• Holburn Lake and Moss
  Holburn Lake and Moss
  Holburn Lake and Moss is a nature reserve in Northumberland, England to the east of the village of Holburn.-The lake:The lake is artificial and was created in 1934. It supports wintering populations of European importance of Greylag geese from the Icelandic population. Birds such as Eurasian Wigeon...
  
  
• Holystone Burn Woods
• Holystone North Wood
• Holywell Pond
• Howick To Seaton Point
• Humbleton Hill And The Trows
• Irthing Gorge
• Kielder Mires
• Kielderhead And Emblehope Moors
  Kielderhead And Emblehope Moors
  -Kielderhead:Kielderhead is 43 square kilometres of upland moorland in northern Northumberland. The moor straddles the English / Scottish border...
  
  
• Knarsdale Meadows
• Lambley River Shingles
• Lampert Mosses
• Linbrigg
• Lindisfarne
  Lindisfarne
  Lindisfarne is a tidal island off the north-east coast of England. It is also known as Holy Island and constitutes a civil parish in Northumberland...
  
  
• Longhorsley Moor
• Longhoughton Quarry
• Low Hauxley Shore
• Mill And Whiskershiel Burns
• Monk Wood
• Muckle Moss
• Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor
  Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor
  Muggleswick, Stanhope and Edmundbyers Commons and Blanchland Moor is a Site of Special Scientific Interest in County Durham and Northumberland, England...
  
   (part is in County Durham
  County Durham
  County Durham is a ceremonial county and unitary district in north east England. The county town is Durham. The largest settlement in the ceremonial county is the town of Darlington...
  
  )
• New Hartley Ponds
• Newham Fen
• Newton Links
• Ninebanks River Shingle
• Northumberland Shore
• Otterburn Mires
• Peckriding Meadows
• Peckriding Top Lot
• Quarryhouse Moor Ponds
• Ramsey's Burn Wood
• Redesdale Ironstone Quarries
• River Coquet And Coquet Valley Woodlands
• River Tyne At Ovingham
• River West Allen At Blackett Bridge
• Roddam Dene
• Roman Wall Escarpments
• Roman Wall Loughs
• Settlingstones Mine
• Simonside Hills
  Simonside Hills
  The Simonside Hills are a hill range in Northumberland, England near the town of Rothbury. Most of the hills are around to high and are popular spots for hikers in the area...
  
  
• Spindlestone Heughs
• Stawardpeel Woods
• Stonecroft Mine
• The Allers And Lilburn Valley Junipers
• The Bog
• The Cheviot
  The Cheviot
  The Cheviot is the highest summit in the Cheviot Hills in the far north of England, only 2 km from the Scottish border. It is the last major peak on the Pennine Way, if travelling from south to north, before the descent into Kirk Yetholm....
  
  
• The Scroggs
• Thorneyburn Meadow
• Till Riverbanks
• Tipalt Burn
• Tweed Catchment Rivers - England: Lower Tweed And Whiteadder
• Tweed Catchment Rivers - England: Till Catchment
• Tyne Watersmeet
• Warks Burn Woodland
• Warkworth Dunes And Saltmarsh
• Wharmley Riverside
• White Ridge Meadow
• Whitfield Moor, Plenmeller And Asholme Commons
• Williamston River Shingle
• Willow Burn Pasture