No Action Indicated (AD)
No Address Instruction (AD)
North American Indian - MARC language code - Library of Congress (LCCP)
Annai - Guyana - Airport symbol (OAG)
Huasteca Este Nahuatl - Language code (ETLW)
Myrick Boats, Fort Lauderdale, FL - Manufacturer code for watercraft hull identification number (USCG)
N-Acetylimidazole - Organic chemistry
Nairobi - Kenya - Seismograph station code, US Geological Survey (SEIS)
Named Areas of Interest - Army intelligence matrix
Nanjing Aeronautical Institute - China (BUAC)
NASA - National Aeronautics and Space Administration Astrobiology Institute - Aerospace
National Agricultural Institute - Later, ACA (EA)
National Apple Institute - Later, IAI (EA)
National Archives of India - History
National Association for Interpretation - Education
National Association of Independent Insurance Auditors and Engineers (NTPA)
National Association of Instructors (BUAC)
National Association of Interpretation (EA)
Natural Alternatives International - AMEX symbol (SPSG)
Nederlands Architectuurinstituut - Netherlands Architecture Institute - Architecture - Dutch
Negro Airmen International (EA)
Net Acid Input - Medicine (DB)
Net Annual Inflow - Pensions
Netherlands Arbitration Institute (ILCA)
Network Access Identifier (XSAL)
Network Advertising Initiative - Advertising
Network Analysis Infrastructure - Computers
Network Associates, Inc. - Computer science
New Acronyms and Initialisms - Later, NAIA - A publication
New Alchemy Institute - Defunct (EA)
No Accidental Injury (DMAA)
No Action Indicated
No Acute Infection (SAUS)
No Acute Inflammation - Medicine (DMAA)
No-Address Instruction (AAG)
No Airborne Intercept - Fighter aircraft lacking airborne intercept RADAR
Nonaccidental Injury
Nonadherence Index (DMAA)
Nonproliferation, Arms Control, and International Security - Lawrence Livermore National Laboratory (RCD)
Nordic Africa Institute - Research center (RCD)
Nordiska Afrikainstitutet - Nordic Africa Institute - Swedish - Research
North American Internet Co.
Northern Alberta Institute of Technology - UTLAS symbol
Northrop Aeronautical Institute - Later, Northrop University
Northrop Aircraft, Inc. (MCD)
N'shei Agudath Israel (BJA)
Nurse Attitudes Inventory (TES)
Sodium Iodide (SAUS)
Learn more about nai