National Security Service could refer to:
National Security Service (Armenia) National Security Service (Kazakhstan) National Security Service (Maldives) National Security Service (Somalia) National Security Service (Turkey) National Security Service (United States) National Security Service (Uzbekistan)
See also National Intelligence and Security Service (disambiguation) Security Service (disambiguation) Security Intelligence Service (disambiguation) National Security (disambiguation) National Security Agency (disambiguation) National Security Bureau (disambiguation) National Security Council (disambiguation)