Frederick George Waterhouse (25 August 1815 – 7 September 1898) was an English naturalist, zoologist and entomologist who made significant contributions to the study of the natural history of Australia.
Waterhouse was born near London, a son of solicitor J. W. Waterhouse. He was a keen naturalist and worked with his elder brother George Robert Waterhouse at the British Museum (Natural History). On 7 July 1852 he married Fanny Shepherd Abbott (c. 1831 – 7 August 1875), and soon after they sailed for South Australia in the Sydney, the first steamer to make the voyage. Together they had five sons and one daughter.
His original intention was to prospect for gold at the Victorian diggings, but he was unsuccessful and found employment with C. T. Hargrave, surveying in the Mount Lofty Ranges and Kangaroo Island.
In 1860 he became curator of the South Australian Institute Museum, which opened in 1862, and which he had helped to found in 1856 with the donation of his own valuable entomological and ornithological collection. He was a corresponding member of the Zoological Society of London.
He joined the John McDouall Stuart Expedition 1861-1862, returning to Adelaide in 1863 with bird and mammal skins, insects and plants, including specimens of the Princess Alexandra parrot, Polytelis alexandrae.
In 1872, trawling in the Gulf St Vincent with Albert Molineux, secretary of the Agricultural Bureau, he caught forty species of fish which had not been found there previously, some of which were new to science, and were described by François Louis de la Porte, comte de Castelnau then in Melbourne.