St. Mary's Seminary and University
| Former name | St. Mary's Seminary and College | 
|---|---|
| Motto | Apostolica civilisque (Latin) | 
| Motto in English | Apostolic and public | 
| Type | Roman Catholic seminary | 
| Established | October 1791 | 
| Religious affiliation | Roman Catholic Church (Sulpician Fathers) | 
| Vice-president | Rev. Paul A. Maillet PSS. (Vice Rector) | 
| President-Rector | Rev. Phillip J. Brown PSS. | 
| Students | 71 (Fall 2024) | 
| Postgraduates | 68 | 
| 2 | |
| Location | Baltimore, Maryland, United States 39°21′37″N 76°38′24″W / 39.3604°N 76.6400°W | 
| Campus | 40 acres (16 ha) | 
| Affiliations | MSA, ATS, MICUA | 
| Website | www.stmarys.edu | 
St. Mary's Seminary and University is a Catholic seminary located within the Archdiocese of Baltimore in Baltimore, Maryland; it was the first seminary founded in the United States after the Revolution and has been run since its founding by the Society of the Priests of Saint Sulpice.