Westminster Cathedral is a Roman Catholic cathedral in the City of Westminster, London, England. It is the largest in England and Wales and is the seat of the Archbishop of Westminster.

It was designed by John Francis Bentley, and built on land acquired by the Church in 1884. The building was started in 1895 and completed in 1903.

It was visited by the Queen in 1995, the first visit of a reigning monarch of England/Great Britain/United Kingdom to a Catholic liturgy for several hundred years.