Theodore Francis Green (October 2, 1867 – May 19, 1966) was an American politician from Rhode Island. A Democrat, Green served as the 57th Governor of Rhode Island (1933–1937) and in the United States Senate (1937–1961). He was a wealthy aristocratic Yankee from an old family who was a strong supporter of Wilsonian internationalism during the Democratic administrations of Franklin Roosevelt and Harry Truman (1933–53). Thanks to seniority he served briefly as chairman of the Senate Foreign Relations Committee. At the time of his retirement in 1961, he set the record at age 93 of the oldest person to serve in the Senate; which was subsequently broken by Strom Thurmond.