Stephen C. Sillett

Stephen C. Sillett (born March 19, 1968) is an American botanist specializing in old growth forest canopies. As the first scientist to enter the redwood forest canopy, he pioneered new methods for climbing, exploring, and studying tall trees. Sillett has climbed many of the world's tallest trees to study the plant and animal life residing in their crowns and is generally recognized as an authority on tall trees, especially redwoods (Sequoia sempervirens).

He is the first Kenneth L. Fisher Chair in Redwood Forest Ecology for the Department of Biological Sciences at Cal Poly Humboldt. He is featured in Richard Preston's New York Times best seller The Wild Trees, as well as in academic journals, general interest magazines, and nature television programs. He lives in Arcata, California, with wife Marie Antoine, a botanist and fellow forest canopy research scientist.