Nathan Marcuvitz (born December 29, 1913 in Brooklyn, New York, d. February 14, 2010 in Naples, FL), was an American electrical engineer, physicist, and educator who worked in the fields of microwave and electromagnetic theory. He was head of the experimental group of the Radiation Laboratory (MIT). He was a member of the National Academy of Engineering. He had a PhD in electrical engineering from Polytechnic Institute of Brooklyn.