NAA

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

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 Arts, 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
 * Negro American Association, US baseball minor Negro league
 * Newspaper Association of America, a trade association
 * Nigerian Accounting Association
 * 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 (Arlington, Virginia) a Navy radio facility located in Arlington, Virginia from 1913 to 1941