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 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. At the time, as Under Secretary of the Navy, Livingstone oversaw a large management portfolio, which included lawyers in the Navy General Counsel's office and investigators at the Naval Criminal Investigative Service who raised concerns about the treatment of detainees at Guantanamo Bay Naval Base.