Terrey Hills is a suburb of Northern Sydney, in the state of New South Wales, Australia 25 kilometres north of the Sydney central business district in the local government area of Northern Beaches Council. It is part of the Forest District and Northern Beaches region. Terrey Hills is a very leafy suburb and in some areas semi-rural, with many people boarding their horses in the area. Terrey Hills owes its name to the two original land holders Samuel Hills and Obediah James Terrey. Obediah Terrey acquired 640 acres (2.6 km2) in 1881 and Samuel Hills owned 100 acres (0.40 km2) nearby.