The Roman Catholic Diocese of Burlington (Latin: Dioecesis Burlingtonensis) is a diocese of the Roman Catholic Church in the New England region of the United States, comprising the entire state of Vermont. It is led by a prelate bishop, who serves as pastor of the motherchurch, Cathedral of the Immaculate Conception in the city of Burlington. The Diocese of Burlington was canonically erected on July 29, 1853 by Pope Pius IX. Its territories were taken from the former Diocese of Boston.