| NAAS | North American Automated Systems |
| NAGS | North American Geosynthetics Society Albany, [NY], http://www.nagsigs.org |
| NAMM | North American Music Merchants |
| NANPA | North American Numbering Plan Administration Sterling, [VA], http://www.nanpa.com |
| NAPAW | North American Process Algebra Workshop |
| NANOG | North American Network Operators Group Ann Arbor, [MI], http://www.nanog.org |
| NAPLPS | North American Presentation Layer Protocol Suite |
| NA | North American Airlines [IATA-Airline-Code/ USA] |
| ANARC | Association of North American Radio Clubs [engl.] |
| NANP | North American Numbering Plan/ Nordamerikanischer Nummerierungsplan Sterling, [VA], http://www.nanpa.com |
| NAPLPS | North American Presentation Layer/Level Protocol Syntax |
| nnw | North North West |
| NNE | North North East |
| BAe | British Aerospace [engl.] |
| BFM | Mobile Aerospace Airport USA, Alabama [Internationaler Airport-Code] |
| AGE | Aerospace Ground Equipment [engl.] Bodeneinrichtungen für die Raumfahrt |
| BBAA | Berlin-Brandenburg Aerospace Allianz e.V. Potsdam, http://www.bbaa.de |
| ARP | Aerospace Recommended Practice [engl.] Standards und Normen in der Raumfahrt |
| ASTR | Aerospace Systems Test Reactor [engl.] |
| ASD | AeroSpace and Defence Industries Association of Europe Brüssel, http://www.asd-europe.org |
| NE | North East |
| N.A. | North Australia |
| ND | North Dakota US-Bundesstaat |
| NWNET | North West Net |
| N.A. | North America |
| NC | North Carolina US-Bundesstaat |
| N.A. | North Africa |
| VGT | Las Vegas North Air Terminal USA, Nevada |
| UNC | University of North Carolina, USA |
| NAO | North Atlantic Oscillation |
| NAC | North Atlantic Council Brüssel, http://www.nato.int/docu/handbook/2001/hb070101.htm |
| DoD | US Department Of Defense Washington, D.C., http://www.defenselink.mil |
| cd | Civil Defense |
| ADA | Air Defense Artillery |
| NEPS | North european pipeline system |
| RSNA | Radiological Society of North America |
| NMD | National Missile Defense |
| ASDF | Air Self Defense Force [engl.] Luftverteidigungskräfte |
| NDEA | National Defense Education Act |
| DLA | Defense Logistics Agency |
| TVD | Total Virus Defense |
| DFCE | Defense Control Element |
| DCA | Defense Communications Agency |
| DDN | Defense Data Network, USA |
| NADEFCOL | NATO Defense College |
| OSD | Office of the Secretary of Defense |
| DSN | Defense Switched Network |
| TMD | Theater Missile Defense Regionale Raketenabwehr |
| DZ | Air Metro North [IATA-Airline-Code/ USA] |
| NATO | North Atlantic Treaty Organization, Nordatlantikpakt Brüssel, http://www.nato.int |