William Saville-Kent was an English marine biologist and author. 

Saville-Kent was educated at King's College London, and then at the Royal School of Mines under T. H. Huxley. He held various jobs in Britain, including at the British Museum from 1866 to 1872. In 1869, he became a member of the Zoological Society of London and in 1873 of the Linnean Society. In 1870, Saville-Kent received a grant from the Royal Society to conduct a dredging survey off Portugal. He worked at the Brighton Aquarium (1872–1873), then at the Manchester Aquarium (1873–1876). He went on to work for various other aquariums, before returning to Brighton in 1879.