St Giles Circus is a road junction in the St Giles district of the West End of London at the eastern end of Oxford Street, where it connects with New Oxford Street, Charing Cross Road and Tottenham Court Road, which it is more often referred to owing to the location of Tottenham Court Road Underground station directly under the junction. It is near to Soho, Covent Garden, Bloomsbury and Fitzrovia.

St Giles is an area in London, England and is located in the London Borough of Camden. It is in Central London and part of the West End. It gets its name from the parish church of St Giles in the Fields. The combined parishes of St Giles in the Fields and St George Bloomsbury were administered jointly for many centuries; leading to the conflation of the two, with much or all of St Giles usually taken to be a part of Bloomsbury. Points of interest include the church of St Giles in the Fields, Seven Dials, the Phoenix Garden, and St Giles Circus.