The history of public transport authorities in London details the various organisations that have been responsible for the public transport network in and around London, England - including buses, coaches, trams, trolleybuses, Docklands Light Railway, and the London Underground.

The London Passenger Transport Board was the organisation responsible for local public transport in London and its environs from 1933 to 1948. In common with all London transport authorities from 1933 to 2000, the public name and brand was London Transport.