North Ockendon is the easternmost and most outlying settlement of Greater London, England, and part of the London Borough of Havering. It is 18 miles (29 km) east-northeast of Central London and consists of a dispersed settlement within the Metropolitan Green Belt. It was historically an ancient parish in the county of Essex, which was abolished for civil purposes in 1936. North Ockendon is the only area in Greater London outside the M25 London Orbital Motorway. North Ockendon is north of South Ockendon, in Thurrock, Essex.