The U.S. Central Intelligence Agency (CIA) was created by the National Security Act.
The creation of the U.S. Central Intelligence AGENCY was authorized by the National Security Act of 1947 (NSA), which also authorized creation of the the new position 'Secretary of Defense' (instead of the former 'War'), the new National Security Council (NCS), and a central intelligence agency - all signed into law by President Harry S. Truman on 26Jul1947.
The CIA agency structure was born in the former "Central Intelligence Group" (CIG) before the National Security Act became law. According to the CIA Center for the Study of Intelligence, officially, the CIG became the Central Intelligence Agency on September 18, 1947.
Several, including the National Security Council (NSC), the National Security Agency (NSA), the Central Intelligence Agency (CIA), the Department of Defense (DOD) (...instead of 'Dept of War'), the former Army-Air Force was split in two: Dept of the Army and Dept of the Air Force.
Nigerian Security Organization was created in 1976.
National Security League was created in 1914.
National Organization for Marriage was created in 2007.
National Farmers Organization was created in 1955.
National Space Organization was created in 1991-10.
Kazakh National Security was created in 1992.
National Security Archive was created in 1985.
National Security Medal was created in 1953.
National Organization for Decent Literature was created in 1938.
National Organization of Scouts of Ukraine was created in 2007.
National Scout Organization of Thailand was created in 1911.
Greek National Tourism Organization was created in 1927.