Linden High School is a comprehensive community public high school located in Linden in Union County, in the U.S. state of New Jersey, serving students in ninth through twelfth grades as the lone secondary school of the Linden Public Schools. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1928.

Linden is a city in southeastern Union County, in the U.S. state of New Jersey. It is part of the New York Metropolitan Area, located about 13 miles (21 km) southwest of Manhattan and bordering Staten Island, a borough of New York City, across the Arthur Kill. As of the 2020 United States census, the city's population was 43,738, an increase of 3,239 (+8.0%) from the 2010 census count of 40,499, which in turn reflected an increase of 1,105 (+2.8%) from the 39,394 counted in the 2000 census.