Jack Richard Miller (June 6, 1916 – August 29, 1994) was a Republican United States Senator from Iowa who served two terms from 1961 to 1973, and then a federal appellate judge.
Miller was born in Chicago, Illinois. He first moved to Sioux City, Iowa in 1932 as a teen. He attended The Oratory School in England, then received a bachelor's degree from Creighton University in Omaha in 1938 and a master's degree from the Catholic University of America in Washington D.C. in 1939.