The Surrey Hills is a 422 km2 (163 sq mi) Area of Outstanding Natural Beauty (AONB), located in Surrey, England. The AONB was designated in 1958 and covers one quarter of the county of Surrey. The Surrey Hills AONB adjoins the Kent Downs AONB to the east and the Wealden portion of the former Sussex Downs AONB (now South Downs National Park) in the south west.
The highest summit of the Surrey Hills AONB is Leith Hill near Coldharbour, at 294 metres (965 ft) above sea level, or 314 metres (1,030 ft) above when Leith Hill Tower is considered. It is part of the Greensand Ridge, which traverses the AONB from west to east, and is the highest point in south-east England.
The Surrey Hills area has three long-distance walks running through it. These are the North Downs Way, the Greensand Way and the Pilgrims' Way. Blackheath Common is also part of this area.
The northern ridge of these hills is predominantly formed by chalk separated by the Vale of Holmesdale that continues into Kent from the southern ridges - predominantly greensand. They provide a haven for many rare plants and insects. Parts of the area are owned and managed by the National Trust, including Ranmore Common, Leith Hill and Box Hill.