Mount Salem Vineyards is a boutique winery in the Pittstown section of Alexandria Township in Hunterdon County, New Jersey, United States. Formerly a produce, grain, and dairy farm, the vineyard was first planted in 2005, and opened to the public in 2010. Peter Leiter, the proprietor of Mount Salem, founded the Appalachian Highlands Vinifera Society, whose mission is to enhance the quality of wine grape growing and winemaking in Northern New Jersey. Mount Salem has 7 acres of grapes under cultivation, and produces 1,000 cases of wine per year. The winery is located at over 600 feet above sea level on Mount Salem, the mountain for which the farm is named.

Pittstown is an unincorporated community located at the intersection of the boundaries of Alexandria, Franklin and Union townships in Hunterdon County, New Jersey. The area is named after William Pitt. The area is served as United States Postal Service ZIP Code 08867. The area was named Hofftown in the 18th century after landowner Lawrence Hoff. The Pittstown Historic District was listed on the state and national registers of historic places in 1990.