The Archdiocese of Galveston–Houston is a Latin Church ecclesiastical jurisdiction—an archdiocese—of the Catholic Church in the United States. The archdiocese covers a portion of Southeast Texas, and is the metropolitan see of the ecclesiastical province covering east-Texas. The archdiocese was erected in 2004, having been a diocese since 1959 and the "Diocese of Galveston" since 1847. It is the second metropolitan see in Texas after the Archdiocese of San Antonio.

Claude Marie Dubuis was a French-born prelate of the Roman Catholic Church. He served as the second bishop of the Diocese of Galveston in Texas. from 1862 until his death in 1892. He founded the Sisters of Charity of the Incarnate Word.