NAA or Naa may refer to:
People Naa Ashorkor (born 1988), Ghanaian actress and radio/ TV broadcaster Naa Govindasamy (1946–1999), Singaporean Tamil-language writer and computer font developer Naa Someswara, Indian science writer and TV presenter
Businesses and organizations Airports and aviation Narita International Airport Corporation, Japan Narrabri Airport (IATA code NAA), New South Wales, Australia National Aeronautic Association, US National Aviation Academy, training school in the US National aviation authority or civil aviation authority, in each country North American Airlines, founded 1989, ceased operations 2014 North American Aviation, major US aerospace manufacturer from 1928 to 1967 Norwegian Air Argentina, an Argentinian airline
In other fields National Academy of Arbitrators, US and Canada National Academy of Art, Bulgaria National Anthropological Archives of the Smithsonian Institution, US National Archives of Australia National Assessment Agency, in the UK Department for Education and Skills National Association of Actors, a Mexican television and motion picture performers union National Auctioneers Association, US Nederlands Audiovisueel Archief, former name of the Nederlands Instituut voor Beeld en Geluid (Netherlands Institute for Sound and Vision), an audiovisual archive in the Hilversum, Netherlands Negro American Association, US baseball minor Negro league Newspaper Association of America, a trade association Nigerian Accounting Association, an association of academics in Nigeria North American Arms, an arms company
In science and technology 1-Naphthaleneacetic acid, a synthetic auxin (organic compound and plant hormone) N-Acetylaspartic acid, a neurochemical often imaged in magnetic resonance spectroscopy Neutron activation analysis, a nuclear process used for determining the concentrations of elements in materials Nicotinamide, also called niacinamide, the amide of nicotinic acid No abstract available bias, an academic tendency to preferentially cite journal articles that have an abstract available online Nucleic acid amplification, a molecular biology technique for replicating segments of DNA Network Address Authority, iSCSI terminology
Other uses National Arabic Alphabets, in the Unicode standard VLF Transmitter Cutler (call-sign NAA), a radio station in Cutler, Maine, operated by the United States Navy NAA (Virginia) a Navy radio facility located in Arlington, Virginia from 1913 to 1941