Steven Siegel is an American artist whose work includes public art, installation art, sculpture, collage and film. He is most known for site-specific, outdoor sculptures, public art commissions and installations made from repurposed pre- and postconsumer materials, which have been influenced by concepts and processes derived from geology and evolutionary biology. Writers relate his work in formal terms to minimalism, in its materials and emphasis on hands-on processes to postminimalism, and in its unconventional means to Land art.