Lyster Hoxie Dewey (1865–1944) was an American botanist, born in Cambridge, Michigan In 1888, he graduated from Michigan Agricultural College where, for the next two years, he taught botany. He was an assistant botanist of the United States Department of Agriculture from 1890 to 1902 and thereafter botanist in charge of fibre investigations. In 1911, he was the U.S. representative to the International Fibre Congress in Surabaya, Java. His publications comprised bulletins of the United States Department of Agriculture on the production of fibre from flax, hemp, sisal, and manila plants; on the classification and origin of the varieties of cotton; and also investigations on grasses and troublesome weeds.