Angel is a London Underground station in the Angel area of the London Borough of Islington. It is on the Bank branch (eastern corollary) of the Northern line, between Old Street and King's Cross St. Pancras stations, in Travelcard Zone 1. The station was originally built by the City & South London Railway (C&SLR) and opened on 17 November 1901. The station served as a terminus until the line was extended to Euston on 12 May 1907.

The station was rebuilt in the early 1990s to accommodate the large number of passengers using the station. As a result, the station has an extra-wide southbound platform. It also has the longest escalators on the Underground network and the fourth-longest escalators in Western Europe. It is also a proposed station on the Crossrail 2 proposed line (N. Surrey and S.W. London-S.E. Hertfordshire).

With a vertical rise of 27 metres (89 ft) and a length of 60 metres (200 ft), Angel station has the longest escalators on the Underground, and the fourth-longest set of escalators in Western Europe (after Náměstí Míru in the Prague Metro at 87 metres (285 ft), Västra skogen in the Stockholm Metro at 67 metres (220 ft) and Kamppi station in the Helsinki Metro at 64 metres (210 ft)). The escalators at Angel were also the longest in the United Kingdom until they were surpassed in 2008 by those at Heathrow Terminal 5A, to connect the main building with the people moving system to the satellite terminals.

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