The Municipal Borough of Hornsey was a local government district in east Middlesex from 1867 to 1965.

The London Borough of Haringey is a London borough in north London, classified by some definitions as part of Inner London, and by others as part of Outer London. It was created in 1965 by the amalgamation of three former boroughs. It shares borders with six other London boroughs. Clockwise from the north, they are: Enfield, Waltham Forest, Hackney, Islington, Camden, and Barnet.