In England, Sites of Special Scientific Interest (SSSIs) are designated by Natural England, which is responsible for protecting England's natural environment. Designation as an SSSI gives legal protection to the most important wildlife and geological sites. As of May 2019, there are 62 Sites of Special Scientific Interest in the county, 52 of which have been designated for their biological interest, 8 for their geological interest, and 2 for both biological and geological interest.

Surrey is a county in South East England. It has an area of and an estimated population of 1.1 million as of 2017. It is bordered by Greater London, Kent, East Sussex, West Sussex, Hampshire and Berkshire. Its top level of government is provided by Surrey County Council and the lower level by eleven boroughs and districts, Elmbridge, Epsom and Ewell, Guildford, Mole Valley, Reigate and Banstead, Runnymede, Spelthorne, Surrey Heath, Tandridge, Waverley and Woking.

Fourteen sites are also Special Protection Areas, six are Special Areas of Conservation, six are Ramsar sites, eleven are Nature Conservation Review sites, ten are Geological Conservation Review sites, twelve are local nature reserves, three are national nature reserves and one is on the Register of Historic Parks and Gardens. Five include scheduled monuments and twenty-six are managed by the Surrey Wildlife Trust.

Key

Interest B = site of biological interest G = site of geological interest

Public access FP = access to footpaths through the site only No = no public access to site PP = public access to part of site Yes = public access to all or most of the site

Other classifications GCR = Geological Conservation Review site LNR = Local nature reserve NCR = Nature Conservation Review site NNR = National nature reserve Ramsar = Ramsar site, an internationally important wetland site RHPG = Register of Historic Parks and Gardens of Special Historic Interest in England SAC = Special Area of Conservation SM = Scheduled monument SPA = Special Protection Area under the European Union Directive on the Conservation of Wild Birds SWT = Surrey Wildlife Trust

Sites