The Queen's Theatre is a 507-seat mid-scale producing theatre located in Hornchurch in the London Borough of Havering, east London.

Hornchurch is a suburban town in East London in the London Borough of Havering. It is located 15.2 miles (24.5 km) east-northeast of Charing Cross. It comprises a number of shopping streets and a large residential area. It historically formed a large ancient parish in the county of Essex that became the manor and liberty of Havering. The economic history of Hornchurch is underpinned by a shift away from agriculture to other industries with the growing significance of nearby Romford as a market town and centre of administration. As part of the suburban growth of London in the 20th century, Hornchurch significantly expanded and increased in population, becoming an urban district in 1926 and has formed part of Greater London since 1965. It is the location of Queen's Theatre, Havering Sixth Form College and Havering College of Further and Higher Education.