| Acronym | Definition |
|---|
| NAA➣Newspaper Association of America |
| NAA➣National Archives of Australia |
| NAA➣National Auctioneers Association |
| NAA➣Not At All |
| NAA➣National Autism Association (Nixa, Missouri) |
| NAA➣Northwestern Alumni Association (Northwestern University; Illinois) |
| NAA➣National Agents Alliance (marketing) |
| NAA➣N-Acetyl Aspartate (prominent peak in proton magnetic resonance spectroscopy) |
| NAA➣National Anthropological Archives (Suitland, MD) |
| NAA➣Neutron Activation Analysis |
| NAA➣Nursing Alumni Association (various universities) |
| NAA➣Newburyport Art Association (Newburyport, MA) |
| NAA➣North American Aviation |
| NAA➣Naples Art Association (Florida) |
| NAA➣Number of Attributes Accesses |
| NAA➣Number of All Associations |
| NAA➣Next Available Agent |
| NAA➣Network Address Authority |
| NAA➣Naphthaleneacetic Acid |
| NAA➣National Aviation Academy (Clearwater, FL) |
| NAA➣National Archery Association |
| NAA➣Nucleic Acid Amplification |
| NAA➣National Association of Attorneys (est. 1989; Smithtown, NY) |
| NAA➣National AfterSchool Association |
| NAA➣No Abstract Available (academic research) |
| NAA➣Native American Aid (National Relief Charities) |
| NAA➣National Assessment Agency (UK) |
| NAA➣National Aphasia Association |
| NAA➣North American Airlines |
| NAA➣National Association of Accountants |
| NAA➣National Arborist Association (now Tree Care Industry Association) |
| NAA➣Nonattainment Areas |
| NAA➣Nissan Auto Auction (Japan) |
| NAA➣National Aviation Authority (various locations) |
| NAA➣Non-African American |
| NAA➣National Aeronautics Association |
| NAA➣National Aquaculture Association |
| NAA➣North Atlantic Assembly (NATO) |
| NAA➣Nashville Auto Auction (Nashville, TN) |
| NAA➣Naphthylacetic Acid |
| NAA➣North American Aerospace |
| NAA➣National Accreditation Authority |
| NAA➣Native American Arts |
| NAA➣National Aggregates Association |
| NAA➣New Account Application (sales) |
| NAA➣Narita Airport Authority (Japan) |
| NAA➣National Airports Authority (India) |
| NAA➣Neighborhood Assistance Act |
| NAA➣Naperville Astronomical Association |
| NAA➣Nippon Aluminum Alkyls, Ltd. (Japan) |
| NAA➣National Aquaculture Act of 1980 |
| NAA➣National Academy of Arts (Bulgaria) |
| NAA➣Next Available Agent (Cisco) |
| NAA➣National Aerosol Association |
| NAA➣Never Again Association (anti-racism group) |
| NAA➣National Aboriginal Alliance |
| NAA➣National Airworthiness Authorities (Canada) |
| NAA➣Not Another Acronym |
| NAA➣Not Always Afloat |
| NAA➣Network Access Agent |
| NAA➣National Artist Award (Philippines) |
| NAA➣Newcastle Aviation Academy (UK) |
| NAA➣Neckwear Association of America |
| NAA➣National Academy on Aging |
| NAA➣Nevada Artists Association |
| NAA➣Notable Achievement Award |
| NAA➣Nuclear Accidents Agreement |
| NAA➣National Asphalt Association |
| NAA➣Network Architecture Assessor (Preventsys) |
| NAA➣National Athletic Association |
| NAA➣National Apartment Association, Inc. (Washington, DC) |
| NAA➣Number Available Agents (Sprint) |