The Diocese of Cremona is a Latin Church ecclesiastical territory or diocese of the Catholic Church in northern Italy. It is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Milan. The bishop of Cremona's cathedra is in the Cathedral of the Assumption of the Virgin Mary.

The Archdiocese of Milan is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church in Italy which covers the areas of Milan, Monza, Lecco and Varese. It has long maintained its own Latin liturgical rite usage, the Ambrosian rite, which is still used in the greater part of the diocesan territory. Among its past archbishops, the better known are Ambrose, Charles Borromeo, Pope Pius XI and Pope Paul VI.