Warren Eastman Hearnes (July 24, 1923 – August 16, 2009) was an American politician and the 46th Governor of Missouri from 1965 to 1973. He was the first Missouri Governor eligible to serve two consecutive four-year terms, and a lifelong Democrat. He was married to Betty Cooper Hearnes (born July 24, 1927), a former Missouri State Representative and Democratic Party nominee for Governor in 1988.