Frederick Seitz (July 4, 1911 – March 2, 2008) was an American physicist and a pioneer of solid state physics.
Seitz was the 4th president of Rockefeller University from 1968–1978, and the 17th president of the United States National Academy of Sciences from 1962–1969.
Seitz was the recipient of the National Medal of Science, NASA's Distinguished Public Service Award, and other honors.
He founded the Frederick Seitz Materials Research Laboratory at the University of Illinois at Urbana–Champaign and several other material research laboratories across the United States.
Seitz was also the founding chairman of the George C.
Marshall Institute, a tobacco industry consultant and a prominent skeptic on the issue of global warming.