Henry County High School was a public high school hosting grades 9–12, located in McDonough, Georgia, United States, and operated by the Henry County School District. The school is located in the Atlanta metropolitan area. Enrollment was around 1,100. The high school's campus included the Henry County Performing Arts Center and the Henry County Academy for Advanced Studies. It had recently seen major renovations and additions to its facilities, and as a result became the largest public high school in Henry County. Henry County High School students were relocated to the newly built McDonough High School following the conclusion of the 2018–2019 school year.