St. Mary's School (Connecticut)

The Archdiocese of Hartford (Latin: Archidioecesis Hartfortiensis) is a Latin Church ecclesiastical territory or archdiocese of the Catholic Church in Connecticut in the United States. It is a metropolitan see. The other dioceses in its ecclesiastical province are those of Bridgeport, Norwich, and Providence.

It was established as the Diocese of Hartford in 1843, when there were only 600 Catholic people in Hartford. In 1953, as the population of Catholics in the region was greatly increasing, it became the Archdiocese of Hartford. In the early 21st century, the archdiocese faced a sexual abuse scandal in which it has paid $50.6 million to settle 146 sexual abuse claims against 32 priests as of January 2019.

The mother church of the Archdiocese of Hartford is the Cathedral of Saint Joseph in Hartford. It covers Hartford, Litchfield and New Haven counties. Christopher J. Coyne is the archbishop of Hartford as of May 1, 2024. The rector of the cathedral is the Very Rev. John Melnick.