| Santa Susanna at the Baths of Diocletian | |
|---|---|
Santa Susanna alle Terme di Diocleziano | |
_-_Front.jpg) Baroque façade of Santa Susanna by Carlo Maderno (1603). | |
 Click on the map for a fullscreen view. | |
| 41°54′15.3″N 12°29′37.1″E / 41.904250°N 12.493639°E | |
| Location | 14 Via XX Settembre, Rome |
| Country | Italy |
| Denomination | Catholic |
| Tradition | Roman Rite |
| Religious order | Cistercians (nuns) |
| History | |
| Status | Titular church, parish church |
| Dedication | Saint Susanna |
| Consecrated | 330 |
| Architecture | |
| Architect(s) | Carlo Maderno |
| Architectural type | Church |
| Style | Baroque |
| Groundbreaking | 4th century |
| Completed | 1603 |
| Specifications | |
| Length | 45 metres (148 ft) |
| Width | 17 metres (56 ft) |
The Church of Saint Susanna at the Baths of Diocletian (Italian: Chiesa di Santa Susanna alle Terme di Diocleziano) is a Catholic parish and Cistercian conventual 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 between 1585 to 1603 for a community of Cistercian nuns founded on the site in 1587 and still based there.
The church served as the national parish for residents of Rome from the United States from 1921 to 2017, during which period the pastoral work of the parish was assigned to the Paulist Fathers, a society of priests founded in the United States. The Paulist Fathers' ministry to United States Catholics subsequently moved to San Patrizio (Saint Patrick).