Elizabeth High School, is a four-year public high school located in Elizabeth, in Union County, in the U.S. state of New Jersey, serving students in ninth through twelfth grades as part of the Elizabeth Public Schools. In 2009, the school and its more than 5,000 students was split into six separate houses, each operating as an independent school with its own principal and subject of focus, including one which has retained the Elizabeth High School name. The school has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1978.

Elizabeth is a city in and the county seat of Union County, in the U.S. state of New Jersey. As of the 2020 United States census, the city retained its ranking as the state's fourth-most-populous city behind neighboring Newark, Jersey City, and Paterson, with a population of 137,298, an increase of 12,329 (+9.9%) from the 2010 census count of 124,969, which in turn reflected an increase of 4,401 (3.7%) from the 120,568 counted in the 2000 census.