Saint Louis University (SLU) is a private Jesuit research university with campuses in St. Louis, Missouri, United States, and Madrid, Spain. Founded in 1818 by Louis William Valentine DuBourg, it is the oldest university west of the Mississippi River and the second-oldest Jesuit university in the United States. The university is accredited by the Higher Learning Commission.

John Joseph Glennon was a prelate of the Roman Catholic Church, serving as Archbishop of St. Louis from 1903 until his death in 1946. He was elevated to the cardinalate in 1946.