The Church of Saint Susanna at the Baths of Diocletian is a Roman Catholic parish church located on the Quirinal Hill in Rome, Italy. There has been a titular church associated to its site as far back as AD 280. The current church was rebuilt from 1585 to 1603 for a monastery of Cistercian nuns founded on the site in 1587, which still exists there.

The Paulist Fathers, officially named the Missionary Society of Saint Paul the Apostle, abbreviated CSP, is a Catholic society of apostolic life of Pontifical Right for men founded in New York City in 1858 by Isaac Hecker in collaboration with George Deshon, Augustine Hewit, and Francis A. Baker.