Monmouth Street is a street in the Seven Dials district of Covent Garden, London, England.
Monmouth Street runs north to south from Shaftesbury Avenue to a crossroads with Tower Street and Shelton Street, where it becomes St Martin's Lane. About halfway it meets Seven Dials, where it intersects with Mercer Street, Earlham Street, and Shorts Gardens. It is numbered B404.
Seven Dials is a road junction and neighbourhood in the St Giles district of the London Borough of Camden, within the greater Covent Garden area in the West End of London. Seven streets of the Seven Dials area converge at the roughly circular central roundabout, at the centre of which is a column bearing six sundials – with the column itself acting as the seventh sundial.
The Seven Dials Trust owns and maintains the column and the sundials and looks after the public realm in collaboration with the local authorities, major land-owners, Historic England and other stakeholders.