Fare zone 1 is the central zone of Transport for London's zonal fare system used by the London Underground, London Overground, Docklands Light Railway^[1] and National Rail.^[2] For most tickets, travel through Zone 1 is more expensive than journeys of similar length not crossing this zone.^[3] The zone contains all the central London districts, most of the major tourist attractions, the major rail terminals, the City of London, and the West End. It is about 6 miles (10 km) from west to east and 4 miles (6 km) from north to south, approximately 17 square miles (45 km²).^[4]

London is split into six approximately concentric zones. Zone 1 covers the West End, the Holborn district, Kensington, Paddington and the City of London, as well as Old Street, Angel, Pimlico, Tower Gateway, Aldgate East, Euston, Vauxhall, Elephant & Castle, Borough, London Bridge, Earl's Court, Marylebone, Edgware Road, Lambeth North and Waterloo. Every London Underground line has stations in zone 1. Underground stations within this zone are typically close together; for instance Covent Garden and Leicester Square are only 0.3 kilometres (0.2 mi) apart, the shortest distance between any two stations in the network.^[5] The zone originates from two central London zones that were created on 4 October 1981 named City and West End, in which flat fares applied, replaced in 1983 by Zone 1.^[4]

The following stations are in zone 1, and were in the 1981–1983 City and West End zones as shown:

• April 2010: Addition of Shoreditch High Street^[7]
• May 2021: Kennington from Zone 2 to Zone 1/2 boundary^[8]
• 20 September 2021: Addition of Battersea Power Station and Nine Elms^[9]

• List of London Underground stations
• List of London railway stations
• List of Docklands Light Railway stations
• List of busiest London Underground stations
• London Underground stations that are listed buildings