Queen Mary's Hospital was a children's hospital in Carshalton, London, England.

[1] However, as local requirements changed, it was converted into a children's hospital and opened as the Children's Infirmary in 1909.

[1] It was heavily bombed during the Second World War and, after the war, it joined the National Health Service in 1948.

[1] After services transferred to St Helier Hospital, Queen Mary's Hospital closed in 1993.

[1] Orchard Hill Hospital, a facility providing long-stay mental health services to adults, remains on the site.