City Hall, London may refer to:

• City Hall, London (Newham), a building in Newham that has been the headquarters of the Greater London Authority since 2022
• City Hall, London (Southwark), a building in Southwark that was the headquarters of the Greater London Authority between 2002 and 2021
• City Hall is a metonym for the Greater London Authority, the devolved administration that occupies the building
• Westminster City Hall, the headquarters of Westminster City Council

• Guildhall, London, headquarters of the City of London Corporation
• County Hall, London, formerly the headquarters of the London County Council, and then the Greater London Council