All Saints, Margaret Street

All Saints is an Anglo-Catholic church on Margaret Street in Westminster, Greater London, England. Founded in the late 18th century as Margaret Street Chapel, the church became one aligned with the Oxford Movement in the 1830s and 1840s. The Movement also prompted the reconstruction of the church in the 1850s under the architect William Butterfield, and the establishment of the Society of All Saints Sisters of the Poor, affiliated to the church. As a parish which does not affirm the ordination of women to the priesthood or episcopacy, All Saints is under the oversight of the Bishop of Fulham.

The church building has been hailed as Butterfield's masterpiece and a pioneering building of the High Victorian Gothic style that would characterize British architecture from around 1850 to 1870. It is known for its Gothic design, use of materials, and interior decoration. The church's musical tradition traces back to the 1840s.