The Co-Cathedral of the Sacred Heart is one of two cathedrals of the Archdiocese of Galveston-Houston. Located in downtown Houston, TX, it is one of two Cathedrals of the Archdiocese, along with St. Mary Cathedral Basilica in Galveston, TX.

In 1959, due to the growth in the city of Houston and an increase in the number of Catholics and Catholic institutions, Pope John XXIII designated the city of Houston to be an episcopal city, effective on December 24, 1959. Thus, the Diocese of Galveston became the Diocese of Galveston-Houston. The city of Galveston had been established as episcopal city in 1847, the first such city in the state of Texas. With the elevation of Sacred Heart Parish to a Co-Cathedral, it became co-equal in rank with St. Mary Cathedral Basilica in Galveston. With this designation, an episcopal chair was also installed in Sacred Heart Parish in Houston and full episcopal ceremonies could then be celebrated in Houston, as well as in Galveston. By the year 2000 it became clear that a new, larger church was needed. On April 2, 2008, Cardinal DiNardo dedicated the new Co-Cathedral of the Sacred Heart. 

Info collected by Tom L. Cubbage II on 07-06-2025