John L. Kuranz (1921-1995) was an American engineer, physicist, and inventor.
During the Manhattan Project, Kuranz was a member of the Special Engineer Detachment at the University of Chicago Met Lab. He worked in the Instrument Section.
After World War II, Kuranz co-founded the Nuclear Chicago Corporation with James Schoke. He had a distinguished career in nuclear medicine. From 1962-68, Kuranz served as chairman of the U.S. Atomic Energy Commission's Committee on Isotope Development. He was also a member of NASA's Aerospace Safety Advisory Panel.