The Old Manor Hospital was a psychiatric hospital in Salisbury, Wiltshire, England. It was established in the early 19th century as a private licensed house called Fisherton House or Fisherton House Asylum, which became the largest private madhouse in the United Kingdom. In 1924, following a change of proprietors, it was renamed Old Manor Hospital and in 1955 it was amalgamated into the National Health Service. From 1813 to 1955 it was owned and managed by members of the same family. The Old Manor Hospital closed in 2003 and was replaced by Fountain Way, a smaller, modern, psychiatric hospital on part of the same site. In 2014 the site was acquired by Quantum Group for development as a residential estate and the conversion of the main building to a hotel.