The M. C. Mulligan & Sons Quarry is a 8.8-acre (3.6 ha) historic district encompassing a former limestone quarry located at 56 Main Street in the town of Clinton in Hunterdon County, New Jersey. It was added to the National Register of Historic Places on August 30, 1994, for its significance in agriculture, commerce, and industry. The listing includes six contributing buildings, two contributing structures, a contributing object, and a contributing site. In 1995, it was also listed as part of the Clinton Historic District. The quarry is now in the Red Mill Museum Village, an open-air museum.