The Diocese of Little Rock (Latin: Dioecesis Petriculana) is a Latin Church ecclesiastical jurisdiction or diocese of the Catholic Church composed of the entire U.S. state of Arkansas. It was established on November 28, 1843. The seat of the diocese is the Cathedral of St. Andrew in Little Rock. The Diocese of Little Rock is a suffragan diocese in the ecclesiastical province of the metropolitan Archdiocese of Oklahoma City.