William Leonard Hungate (December 14, 1922 – June 22, 2007) was a United States representative from Missouri from November 3, 1964 (special election upon the death of Congressman Clarence Cannon), to January 3, 1977, representing the Ninth Congressional District. Following his retirement from the United States House of Representatives, Hungate was appointed to serve as a United States district judge of the United States District Court for the Eastern District of Missouri in 1979 by President Jimmy Carter, where he served until his retirement in 1992. He is also the father of David Hungate.