Shenley Hospital was a psychiatric hospital at Shenley in Hertfordshire.
The hospital was constructed by John Laing & Son for Middlesex County Council with the first phase being completed in 1932. The hospital was designed to treat 2,000 patients.King George V and Queen Mary officially opened the hospital in 1934. Patients underwent experimental treatments including malaria therapy to cure "insanity caused by syphilis", electro-convulsive therapy and insulin injections to remove psychotic thoughts. During the Second World War, part of the facility was used as a military hospital. A mother-and-baby unit was added in 1962. The hospital was closed in 1998 and the site was subsequently redeveloped for housing as Shenley Park.
Coordinates: 51°41′40″N 0°17′34″W / 51.69444°N 0.29278°W