Middle Harling Fen

{{Short description|Protected area in Norfolk, England}}

{{Infobox SSSI

|image= Middle Harling Fen 2.jpg

|image_caption =

|name= Middle Harling Fen

|aos= Norfolk

|interest=Biological

|gridref={{gbmappingsmall|TL 988 852}}

|area= {{convert|11.8|ha|acre|abbr=off}}

|notifydate= 1986

|map=[http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000696%27 Magic Map]

}}

Middle Harling Fen is a {{convert| 11.8 |ha|acre|abbr=off|adj=on}} biological Site of Special Scientific Interest south of East Harling in Norfolk, England.{{cite web|url= https://designatedsites.naturalengland.org.uk/SiteDetail.aspx?SiteCode=S1000696&SiteName=&countyCode=29&responsiblePerson=&SeaArea=&IFCAArea= |title=Designated Sites View: Middle Harling Fen | series= Sites of Special Scientific Interest|publisher=Natural England|access-date = 22 July 2018}}{{cite web|url=http://magic.defra.gov.uk/MagicMap.aspx?startTopic=Designations&activelayer=sssiIndex&query=HYPERLINK%3D%271000696%27 |title=Map of Middle Harling Fen|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 22 July 2018}}

This calcareous valley fen has several springs and a wide variety of types of grassland, including both wet and dry communities. There are uncommon flora such as adder's tongue and yellow rattle, and the breeding birds are diverse.{{cite web|url= https://designatedsites.naturalengland.org.uk/PDFsForWeb/Citation/1000696.pdf |title=Middle Harling Fen citation|series= Sites of Special Scientific Interest|publisher=Natural England|access-date= 22 July 2018}}

The site is private land with no public access.