South Brunswick High School (SBHS) is a comprehensive community public high school serving students in grades nine through twelve at the school located in the Monmouth Junction section of South Brunswick, in Middlesex County, in the U.S. state of New Jersey, operating as the lone secondary school of the South Brunswick Public Schools. The school is accredited until January 2029 and has been accredited by the Middle States Association of Colleges and Schools Commission on Elementary and Secondary Schools since 1965.

As of the 2023–24 school year, the school had an enrollment of 2,728 students and 196.6 classroom teachers (on an FTE basis), for a student–teacher ratio of 13.9:1. There were 273 students (10.0% of enrollment) eligible for free lunch and 98 (3.6% of students) eligible for reduced-cost lunch. Based on 2021-22 data from the New Jersey Department of Education, it was the fourth-largest high school in the state and one of 28 schools with more than 2,000 students.