Surrey (/ˈsʌri/ SURR-ee)^[2] is a county in South East England, and one of the home counties. It borders Kent to the east, Sussexto the south, Hampshire to the west, Berkshire to the north-west and Greater London to the north-east. The county town is Guildford. Surrey County Council sits outside its jurisdiction in Kingston upon Thames, part of Greater London since 1965. With a population of 1.1 million, Surrey is the third-most-populous county in the South East.

Surrey is divided into eleven districts: Elmbridge, Epsom and Ewell, Guildford, Mole Valley, Reigate and Banstead, Runnymede, Spelthorne, Surrey Heath, Tandridge, Waverley, and Woking. Services such as roads, mineral extraction licensing, education, strategic waste and recycling infrastructure, birth, marriage, and death registration, and social and children's services are administered by Surrey County Council. The London boroughs of Lambeth, Southwark, Wandsworth, and small parts of Lewisham and Bromley were in Surrey until 1889; as were those of Croydon, Kingston upon Thames, Merton, Sutton and the part of Richmond upon Thames on the right bank of the River Thames until 1965, when they too were absorbed into Greater London, and the county extended north of the Thames by the addition of Spelthorne, as a result of the dissolution of Middlesex. Since the 1965 reform the bordering boroughs of the capital have been those taken from it in 1965 (except for Merton) plus Bromley, Hillingdon and Hounslow.

The form of Surrey which remains since 1965 is a wealthy county, due to aesthetic, conservation and logistical factors. It has protected green spaces (such as the North Downs, Greensand Ridge and related Surrey Hills AONB and royal landscapes adjoin it — Windsor Great Park and Bushy Park near to its interior reach of the River Thames). It has four racecourses in horse racing, the most of any Home County and as at 2013 contained 141 golf courses including international competition venue Wentworth. Surrey has proximity to London and to Heathrow and Gatwick airports, along with access to major arterial road routes including the M25, M3 and M23 and frequent rail services into Central London. It has the highest GDP per capita of any English county and some of the highest property values outside Inner London.