| St. Mary's Church (Newark Abbey church) | |
| Location: | 520 Martin Luther King Jr. Blvd and William Street, Newark, New Jersey |
| Coordinates: | 40.7358°N -74.2869°W |
| Built: | 1856 |
| Architect: | Henry Engelbert |
| Architecture: | German Romanesque Revival |
| Added: | November 03, 1972 |
| Refnum: | 72000790 |
| Designated Other1 Name: | New Jersey Register of Historic Places |
| Designated Other1 Abbr: | NJRHP |
| Designated Other1 Link: | New Jersey Register of Historic Places |
| Designated Other1 Number: | [1] |
| Designated Other1 Num Position: | bottom |
| Designated Other1 Color: |
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St. Mary's Abbey Church is a historic Catholic parish church in the Archdiocese of Newark at 520 Martin Luther King Blvd (formerly High St.) and William St. in Newark, New Jersey.
The parish was established in 1842 to serve the needs of working-class German-speaking immigrants who worked in Newark's factories. It met originally in a wooden church, but this was destroyed in 1856 by anti-Catholic Know Nothing elements.
The new church was entrusted to the monks of the Order of Saint Benedict, first under the direction of Saint Vincent Archabbey in Latrobe, and then, after becoming an independent institution, by the monks of Newark Abbey, who continue to provide spiritual and academic guidance to the community through the parish and Saint Benedict's Preparatory School.
Construction was completed in 1857. It was added to the National Register of Historic Places in 1972.