King's Cross St Pancras tube station

King's Cross St Pancras (/ˈkɪŋz ˈkrɒs sənt ˈpæŋkrəs/; also known as King's Cross & St Pancras International) is a London Underground station on Euston Road in the London Borough of Camden, Central London. It serves King's Cross and St Pancras main line stations in fare zone 1, and is served by six lines: Circle, Hammersmith & City, Metropolitan, Northern, Piccadilly and Victoria. The station was one of the first to open on the network. As of 2023, it is the most used station on the network for passenger entrances and exits combined.

On the Circle, Hammersmith & City and Metropolitan lines, the station is between Euston Square and Farringdon stations. On the Bank branch of the Northern line the station is between Euston and Angel stations, on the Piccadilly line it is between Russell Square and Caledonian Road stations, and on the Victoria line it is between Euston and Highbury & Islington stations.

The station opened in 1863 as part of the Metropolitan Railway, subsequently catering for the Hammersmith & City and Circle lines. It was expanded in 1868 with the opening of the City Widened Lines, and the Northern and Piccadilly platforms opened in the early 20th century. During the 1930s and 1940s, the station was restructured and partially rebuilt to cater for expanded traffic. The Victoria line connection opened in 1968. The 1987 King's Cross fire that killed 31 people is one of the deadliest accidents to occur on the Underground and resulted in widespread safety improvements and changes throughout the network. The station was extensively rebuilt in the early 21st century to cater for Eurostar services that moved from Waterloo to St Pancras, reopening in 2007.