The Diocese of Antwerp is a Latin Church ecclesiastical territory or diocese of the Catholic Church in Belgium. The diocese was restored in 1961. It is a suffragan in the ecclesiastical province of the metropolitan Archdiocese of Mechelen-Brussels. Its cathedra is found within the Cathedral of Our Lady.

The Catholic Church in Belgium, part of the global Catholic Church in Belgium, is under the spiritual leadership of the Pope, the curia in Rome and the Episcopal Conference of Bishops.