New Jersey State Highway 120 is a state highway in New Jersey, United States. It is a short route connecting NJ 3 and NJ 17 in East Rutherford, New Jersey.

From 1934 to 1952, it was part of NJ 3. In 1953, the section from modern NJ 3 to Paterson Plank Road was redesignated NJ 20 and the section along Paterson Plank Road was decommissioned. This section was recommissioned in 1971 when the Meadowlands Sports Complex was slated to be built.

On February 20, 1988, the road was redesignated NJ 120 when it became clear that the gap between NJ 20 and this highway would not be filled.[1]