Vancouver's Holy Rosary Cathedral was dedicated by Archbishop William Mark Duke, fifty-three years after it first opened.

The Metropolitan Cathedral of Our Lady of the Holy Rosary, commonly known as Holy Rosary Cathedral, is a late 19th-century French Gothic revival church that serves as the cathedral of the Roman Catholic Archdiocese of Vancouver. It is located in the downtown area of the city at the intersection of Richards and Dunsmuir streets.

Dedication of churches is a Christian dedication ceremony of a church building. Churches under the authority of a bishop are usually dedicated by him.

William Mark Duke was a Canadian prelate of the Roman Catholic Church, who served as Archbishop of Vancouver from 1931 to 1964.