| Saint Mary's Catholic Church Complex | |
| Location: | Liberty and W. 6th Streets, Plainfield, New Jersey |
| Coordinates: | 40.6108°N -74.4239°W |
| Built: | 1875–1880 |
| Architect: | Jeremiah O'Rourke |
| Architecture: | Gothic, High Victorian Gothic |
| Added: | April 11, 1985 |
| Refnum: | 85000785 |
| Designated Other1 Name: | New Jersey Register of Historic Places |
| Designated Other1 Abbr: | NJRHP |
| Designated Other1 Link: | New Jersey Register of Historic Places |
| Designated Other1 Date: | January 28, 1985 |
| Designated Other1 Number: | 2706[1] |
| Designated Other1 Num Position: | bottom |
| Designated Other1 Color: |
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Saint Mary's Catholic Church Complex is a historic Roman Catholic parish church located within the Archdiocese of Newark at Liberty and W. 6th Streets in the city of Plainfield in Union County, New Jersey, United States. The complex, including the church, rectory, convent and school, was added to the National Register on April 11, 1985, for its significance in architecture and religion.[2]
The church was designed featuring High Victorian Gothic architecture by Irish-American architect Jeremiah O'Rourke and built from 1875 to 1880 with red, yellow, and black brick. The rectory was built in 1880 and also features High Victorian Gothic architecture. The three-story Victorian Gothic convent was built in 1910. The two-story Collegiate Gothic school was designed by architect James S. Piggott and built in 1931.[2]