Highbury is a district in the London Borough of Islington.

The area now known as Islington was part of the larger manor of Tolentone, which is mentioned in the Domesday Book. Tolentone was owned by Ranulf brother of Ilger and included all the areas north and east of Canonbury and Holloway Road. The manor house was situated by what is now the east side of Hornsey Road near the junction with Seven Sisters Road. After the manor decayed, a new manor house was built in 1271 (see below) to the south-east; to differentiate it from the original manor and because it was on a hill, it was called Highbury, from which the area takes its name.