Thundersley Great Common

{{Use dmy dates|date=April 2022}}

{{Infobox SSSI

|image=Thundersley Great Common in Winter - geograph.org.uk - 546237.jpg

|image_caption=

|name= Thundersley Great Common

|aos= Essex

|interest= Biological

|gridref={{gbmappingsmall|TQ 793891}}
{{gbmappingsmall|TQ 797894}}

|area= 8.9 hectares

|notifydate=1987

|map=[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271002282%27 Magic Map]

}}

Thundersley Great Common or Thundersley Common is an {{convert|8.9|hectare|acre|adj=on}} biological Site of Special Scientific Interest in Thundersley in Essex.{{cite web|url= http://www.sssi.naturalengland.org.uk/citation/citation_photo/1002282.pdf|title=Thundersley Great Common citation|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate= 7 August 2016}}{{cite web|url= http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271002282%27|title=Map of Thundersley Great Common|series= Sites of Special Scientific Interest|publisher=Natural England|accessdate= 7 August 2016}} It is managed as public open space by Castle Point Borough Council.{{cite web|url=https://www.castlepoint.gov.uk/thundersley-common|title=Thundersley Common|publisher=Castle Point Borough Council|accessdate= 7 August 2016}}

The site is in two separate areas, and has a variety of grass and heath habitats. There wet and dry heathland, both unusual in Essex, and have locally uncommon plants. Heather and gorse are dominant in areas which are not mown, and ponds which dry up in the summer provide an additional habitat.

There is access from Common Approach and Kingsley Lane.