The Archdiocese of Canberra and Goulburn is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church located in the Australian Capital Territory, and the South West Slopes, Southern Tablelands, Monaro and the South Coast regions of New South Wales, Australia. Erected in 1948, the archdiocese is directly subject to the Holy See.

St Christopher's Cathedral, officially The Cathedral of St Christopher, is the main place of Roman Catholic worship and the seat of the Archbishop of the Archdiocese of Canberra and Goulburn, in the city of Canberra, in the Australian Capital Territory, Australia.