Southington High School is a public high school located at 720 Pleasant Street in Southington, Connecticut. It is the only high school in Southington.

Southington is a town in Hartford County, Connecticut, United States. The town is part of the Capitol Planning Region. As of the 2020 United States Census, it had a population of 43,501. Southington contains the villages of Marion, Milldale, and Plantsville.