Essex Road is a National Rail station in Canonbury in Greater London, England, and is on the Northern City Line between Old Street and Highbury & Islington, 1 mile 59 chains (2.8 km) down the line from Moorgate, and is in Travelcard Zone 2. The station is at the junction of Essex Road, Canonbury Road and New North Road, with the present entrance on Canonbury Road. Operated by Great Northern, it is the only deep-level underground station in London served exclusively by National Rail trains. Between 1933 and 1975 the station was operated as part of the London Underground, as a short branch of the Northern line. Between 1922 and 1948 the station name was Canonbury & Essex Road. The name reverted to the original form in 1948.

Canonbury is a residential area in London, forming part of the London Borough of Islington. It is roughly in the area between Essex Road, Upper Street and Cross Street and either side of St Paul's Road in North London.