Westminster Cathedral in London is the mother church of the Catholic community in England and Wales and the Metropolitan Church and Cathedral of the Archbishop of Westminster. It is dedicated to the "Most Precious Blood of Jesus Christ".

The site on which the Cathedral stands originally belonged to the Benedictine monks who established the nearby Westminster Abbey and was purchased by the Archdiocese of Westminster in 1885.

The cathedral is located in Victoria, SW1, in the City of Westminster. It is the largest Catholic church in England and Wales, and should not be confused with Westminster Abbey of the Church of England. Westminster Cathedral is the seat of the Archbishop of Westminster, currently His Grace The Most Rev. Dr. Vincent Nichols. As a matter of custom, each newly appointed Archbishop of Westminster has eventually been created a cardinal in consistory.