Peter Halley (born September 24, 1953) is an American artist and a central figure in the Neo-Conceptualist movement of the 1980s.
Known for his Day-Glo geometric paintings, Halley is also a writer, the former publisher of index Magazine, and a teacher; he served as Director of Graduate Studies in Painting and Printmaking at the Yale University School of Art from 2002 to 2011.