Milward L. Simpson (November 12, 1897 - June 10, 1993) was an American politician who served as a U.S. Senator from Wyoming. Simpson was born in Jackson, Teton County, Wyoming. He attended the public schools of Wood River, Meeteetse, and Cody; and graduated from the University of Wyoming in 1921. Simpson then attended Harvard University Law School from 1921 to 1925. During World War I, Simpson served as a second lieutenant in the Infantry, United States Army. Simpson was admitted to the bar in 1926 and practiced law in Cody until 1955.
Simpson served as a member of the Wyoming State House of Representatives 1926 to 1927. He was a member of the board of trustees of the University of Wyoming in 1939 and served as president from 1943-1954. He was a member of the National Association of Governing Boards of State Universities and Allied Institutions in 1950 and served as president in 1952 and 1953.
Milward Simpson was Governor of Wyoming from 1955 to 1959; he resumed his law practice in 1959. He later won a special election on November 6, 1962, to the United States Senate to fill the vacancy caused by the death of Senator-elect Keith Thomson in the term ending January 3, 1967; he was not a candidate for reelection in 1966. Simpson lived in Cody, Wyoming, until his death in 1993 at age 95.
He voted against the Civil Rights Act of 1964.
His son, Alan K. Simpson, also served in the United States Senate.
