The Lorton Reformatory, also known as the Lorton Correctional Complex, is a former prison complex in Lorton, Virginia, established in 1910 for the District of Columbia, United States.

The complex began as a prison farm called the Occoquan Workhouse for nonviolent offenders serving short sentences. The District established an adjacent reformatory in 1914, and then a 10 acre walled penitentiary