New Providence High School is a comprehensive public high school in the borough of New Providence, in Union County, in the U.S. state of New Jersey, operating as the lone secondary school in the New Providence School District, serving students in ninth through twelfth grades. New Providence High School opened on September 8, 1958, with its first graduating class on June 23, 1960. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1965 and received probationary accreditation in 2012. The school opened on September 8, 1958, and had its first graduating class of seniors in June 1960.

New Providence is a borough on the northwestern edge of Union County, in the U.S. state of New Jersey. It is located on the Passaic River, which forms the county boundary with Morris County bordering Chatham Township. As of the 2020 United States census, the borough's population was 13,650, an increase of 1,479 (+12.2%) from the 2010 census count of 12,171, which in turn reflected increase of 264 (+2.2%) from the 11,907 counted in the 2000 census.