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.

The Archdiocese of San Antonio is a Latin Church archdiocese of the Catholic Church in the United States. It encompasses 27,841 square miles (72,110 km2) in the U.S. state of Texas. The Roman Catholic Archdiocese of San Antonio had a self-reported 2018 population of 796,954, up from 728,001 in 2014. The archdiocese includes the city of San Antonio and the following counties: Val Verde, Edwards, Real, Kerr, Gillespie, Kendall, Comal, Guadalupe, Gonzales, Uvalde, Kinney, Medina, Bexar, Wilson, Karnes, Frio, Atascosa, Bandera County, and the portion of McMullen County north of the Nueces River.