The River Ter SSSI is a stretch of the River Ter and its banks south of Great Leighs in Essex which has been designated a geological Site of Special Scientific Interest.

[1][2] It is a Geological Conservation Review site.

[3] According to the Natural England citation: Most of the river is inaccessible as it is surrounded by dense vegetation, but a footpath runs through an area of the north bank, east of the road called Cole Hill, which is within the SSSI.