The National Gallery is an art gallery in London, located on the north side of Trafalgar Square. It houses Western European paintings from 1250 to 1900 from the national art collection of Great Britain. The collection of 2,300 paintings belongs to the British public, and entry to the main collection is free, although there are charges for entry to special exhibitions.

Despite having been founded without an existing royal collection on which to build, and housed in buildings often deemed inadequate for their purpose, the National Gallery has grown to be a collection of international renown. The collection is small in comparison with other national collections such as the Louvre, but with a broad scope and paintings of exceptionally high quality. It is also said of the collection that it provides a well-balanced overview of Western art history up to the 20th century; every major development in painting from the Early Renaissance to the Post-impressionists is represented in its holdings, often by masterpieces.