Thomas Gayle Morris (August 20, 1919 – March 4, 2016) was an American politician.

Morris moved to New Mexico and served in the United States Navy from November 12, 1937, to March 22, 1944.

He was narrowly defeated by Republican businessman Manuel Lujan Jr.

He ran unsuccessfully for the Democratic nomination for the United States Senate in 1972, and then served as a management consultant and vice president for Bank Securities, Inc. As of 2013 he resided in Albuquerque, New Mexico.

Thomas G. Morris donated his Congressional Papers to the New Mexico State University Library in 1973.