Bexleyheath is a town in south-east London, England, in the London Borough of Bexley. It had a population of 15,600 in 2021 and is 12 miles (19.3 km) south-east of Charing Cross. It is identified in the London Plan as one of 35 major centres in London. Its post town takes in other surrounding neighbourhoods, including Barnehurst, West Heath and Upton.

The London Borough of Bexley is a London borough in south-east London, forming part of Outer London. It has a population of 248,287. The main settlements are Sidcup, Erith, Bexleyheath, Crayford, Welling and Old Bexley. The London Borough of Bexley is within the Thames Gateway, an area designated as a national priority for urban regeneration. The local authority is Bexley London Borough Council.