The Fabric of Saint Peter is an institution of the Roman Catholic Church responsible for the conservation and maintenance of St. Peter's Basilica and exercising vigilance over its sacred character and the organization of visitors. While it is not part of the Roman Curia, the 1988 apostolic constitution Pastor bonus recognizes it as "closely associated with the Holy See." The Fabric has existed under various names and varying responsibilities since 1523, when Pope Clement VII established a commission to build and administer the Basilica.
The Archpriest of the Basilica is customarily the President of the Fabric.