St. Stanislaus Seminary
| St. Stanislaus Seminary | |
| St. Stanislaus Seminary in 1936 | |
| Location | 700 Howdershell Rd., Hazelwood, Missouri | 
|---|---|
| Coordinates | 38°48′6″N 90°21′58″W / 38.80167°N 90.36611°W | 
| Area | 9.9 acres (4.0 ha) | 
| Built | 1840 | 
| Architectural style | Greek Revival | 
| NRHP reference No. | 72001491 | 
| Added to NRHP | September 22, 1972 | 
St. Stanislaus Seminary is a former Society of Jesus (Jesuits) seminary that was founded in 1823 on the outskirts of Florissant, Missouri within the current municipal limits of Hazelwood, Missouri. It was the longest continuously operated Jesuit novitiate in the United States.