Lee Grodzins (born July 10, 1926) is an American professor emeritus of physics at the Massachusetts Institute of Technology (MIT). After groundbreaking work as a researcher at Brookhaven National Laboratory, Grodzins joined the faculty of MIT, where he taught physics for nearly four decades. He was also head of R&D for Niton Corporation, which developed devices to detect dangerous contaminants and contraband. He has written more than 150 technical papers and holds more than 50 US patents.