Robert E. Fassnacht (January 14, 1937 – August 24, 1970) was a physics post-doctoral researcher who was killed by the bombing of Sterling Hall on August 24, 1970, on the University of Wisconsin–Madison campus. Fassnacht was a student from South Bend, Indiana who received a Westinghouse scholarship to attend college. He was at the University of Wisconsin–Madison pursuing post-doctoral research in the field of superconductivity, which has potential applications including power distribution and high-speed trains.