美国前国民银行发行的钞票

National Aeronautics and Space Administration

National Committee of the Chinese People's Political Consultative Conference (CPPCC)

National Center for Biotechnology Information，NCBI

national assembly

Nigerian National Petroleum Corp.【油气】

Japan National Institute of Genetics Center for Information Biology

National Information Infrastructure\nNII\n计

State Commission of science and Technology for National Defense Industry