Marguerite Henry (scientist)

Marguerite Henry (12 November 1895 – 9 December 1982) was an Australian zoologist known for her research on freshwater crustaceans; she was active in the early 20th century. Henry's work contributed to the taxonomy and ecology of Australia's freshwater entomostracans, describing dozens of new species and establishing a new genus of copepods, Gladioferens. Her research, supported by the Australian government and the Linnean Society of New South Wales, focused on cladocerans, copepods, ostracodes, and phyllopods, with her findings published in a series of detailed monographs between 1919 and 1924.

Henry was among the first women in Australia to undertake formal zoological research, earning a Bachelor of Science in zoology from the University of Sydney in 1916. She contributed to understanding parasitic nematodes' life cycles before shifting her focus to freshwater crustaceans. Her scientific career ended following her marriage in 1924, after which she disappeared from the academic world.