John Paul Hogan (August 7, 1919 – February 19, 2012) was an American research chemist. Along with Robert Banks, he discovered methods of producing polypropylene and high-density polyethylene. Hogan was born in Lowes, Kentucky to Charles Franklin and Alma (Wyman) Hogan and earned B.S. degrees in both Chemistry and Physics at Murray State University of Kentucky in 1942. He taught at both the high school and college level before going to work in research at the Phillips Petroleum Company in 1944. After a few years as an independent consultant, he fully retired in 1993.