Tate Britain, known from 1897 to 1932 as the National Gallery of British Art and from 1932 to 2000 as the Tate Gallery, is an art museum on Millbank in the City of Westminster in London, England. It is part of the Tate network of galleries in England, with Tate Modern, Tate Liverpool and Tate St Ives. Founded by Sir Henry Tate, it houses a substantial collection of the art of the United Kingdom since Tudor times, and in particular has large holdings of the works of J. M. W. Turner, who bequeathed all his own collection to the nation. It is one of the largest museums in the country. The museum had 525,144 visitors in 2021, an increase of 34 percent from 2020 but still well below pre- COVID-19 pandemic levels. In 2021 it ranked 50th on the list of most-visited art museums in the world.

Millbank is an area of central London in the City of Westminster. Millbank is located by the River Thames, east of Pimlico and south of Westminster. Millbank is known as the location of major government offices, Burberry headquarters, the Millbank Tower and prominent art institutions such as Tate Britain and the Chelsea College of Art and Design.