The Archdiocese of Saint Paul and Minneapolis is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church in the United States. It is led by an archbishop who administers the archdiocese from the cities of Saint Paul and Minneapolis. The archbishop has both a cathedral and co-cathedral: the mother church – the Cathedral of Saint Paul in Saint Paul, and the co-cathedral, the Basilica of Saint Mary in Minneapolis.

A co-cathedral is a cathedral church which shares the function of being a bishop's seat, or cathedra, with another cathedral, often in another city. Instances of this occurred in England before the Protestant Reformation in the dioceses of 'Bath and Wells', and of 'Coventry and Lichfield'. These two dioceses were each named for both cities that served as bishop's seats.