Ann Zeilinger Caracristi (February 1, 1921 – January 10, 2016) was an American cryptanalyst. She was the former Deputy Director of the National Security Agency, where she served at many positions over a 40-year career. She served as a member of the Secretary of Defense Joint Security Commission and President's Foreign Intelligence Advisory Board. She became the first woman at NSA to be promoted to "GS-18" rank, in 1975. She was born in Bronxville, New York.