Susan Morrisey Livingstone (born January 13, 1946, in Carthage, Missouri) is a former Acting U.S. Secretary of the Navy in the George W. Bush administration from January-February 2003. She was the first and is so far the only woman to become Secretary of the Navy in U.S. history. Livingstone played a role in the effort to end coercive and abusive interrogation tactics at U.S. Naval Base Guantanamo Bay, Cuba.