Corsydd Llangloffan is a Site of Special Scientific Interest (or SSSI) in Pembrokeshire, South Wales.

It has been designated as a Site of Special Scientific Interest since February 1992 in an attempt to protect its fragile biological elements.

[1] The site has an area of 56.7 hectares (140 acres) and is managed by Natural Resources Wales.

This site is designated due to its biological qualities.

Breeding birds include barn owl, song thrush, spotted flycatcher, linnet, Eurasian bullfinch and reed bunting.