Frederick Norton Manning (25 February 1839 – 18 June 1903), was a medical practitioner, military surgeon, Inspector General of the Insane for the Colony of New South Wales, and was an Australian Lunatic Asylum Superintendent.
He was a leading figure in the establishment of a number of lunatic asylums in the colonies of New South Wales and Victoria, and participated in inquests and reviews of asylums throughout the colonies.