John Roloff (b. 1947) is a sculptor, ceramicist and environmental artist whose innovative practice explores the relationships between geology, ecology, material transformation and human activity. Born in Portland, Oregon, Roloff earned a B.A. from the University of California, Davis in 1970, where he studied geology with Eldridge Moores and art with Robert Arneson and William T. Wiley. He received an M.A. from California State University, Humboldt, in 1973. His early ceramic experiments evolved into ambitious site-specific kiln and furnace projects that transformed natural materials through heat, fire and geological processes. His work examines the interconnected systems of land, sea and atmosphere. Roloff has exhibited at Whitney Museum of American Art, San Francisco Museum of Modern Art and the Venice Biennale. A recipient of three National Endowment for the Arts fellowships and a Guggenheim Fellowship, he is professor emeritus at the San Francisco Art Institute.