National Musical String Company

The National Musical String Company is a defunct music string factory located at 120 Georges Road in the city of New Brunswick in Middlesex County, New Jersey, United States. It was built in 1898 and was designed by the architect Ben C. DeKamp. The building was added to the National Register of Historic Places on April 20, 1982, for its significance in architecture, industry, and music.

The company was to make the first harmonicas in America, and became the world's largest producer of steel strings. The property is being redeveloped by Pioli Properties as a mixed-use site with the primary National Music String building renovated for commercial retail uses on the first level, and 38 residential apartment units on the second and third floors.