Peter Bacon Hales (November 13, 1950 – August 26, 2014) was an American historian, photographer, writer, and musician. His works were in American spaces and landscapes, the history of photography, and contemporary art. His wrote six books including "Silver Cities: The Photography of American Urbanization, 1839–1915", and "Atomic Spaces: Living on the Manhattan Project". He was a University of Illinois at Chicago (UIC) faculty member for 32 years, including four years as chair of his department (art history). He retired in 2012.