Haverhill High School (HHS) is a public high school in Haverhill, Massachusetts, United States. Serving grades 9–12, it is the sole public high school in the Haverhill Public Schools district and offers open enrollment. As of the 2023–2024 school year, the school had an enrollment of 1,991 students.

The origins of public secondary education in the city date to 1841, when the town merged its first public high school with the pre-existing Haverhill Academy. The school occupied several buildings over the following century, including a prominent 1909 building on Main Street designed by C. Willis Damon that now serves as Haverhill City Hall. The high school moved to its current campus on Monument Street in 1963.

Haverhill High School's athletic teams are known as the Haverhill Hillies and compete in the Merrimack Valley Conference. The school is notable as the alma mater of Archie Comics creator Bob Montana, who used his experiences at the school as the basis for the fictional Riverdale High School.