| Acronyms | Meaning / Significance | Source |
| N | Notice (Working Paper) | |
| NAAG | NATO Army Armaments Group | |
| NABS | NATO air base SATCOM | US mobile satellite terminal |
| NABS | NATO air base satellite system | AC/317(WG/1)N/606 |
| NAC | North Atlantic Council | |
| NACC | NACISA aviation control cell | |
| NACC | North Atlantic cooperation council | |
| NACCIS | North Atlantic Command & Control Information System | |
| NACISA | NATO CIS Agency | Subsumed within NC3A |
| NACISC | NATO Communications and Information Systems Committee | Responsibilities assumed by NC3B |
| NACISO | NATO CIS organisation | |
| NACMA | NATO ACCS management agency | |
| NACMO | NATO ACCS management organization | |
| NACOSA | NATO CIS Operating and Support Agency | |
| NACSI | NATO advisory committee on special intelligence | |
| NAD | NACISA ATM Database | |
| NAD | national armaments director | |
| NADC | NATO air defence committee | |
| NADDO | NATO design and development objective | |
| NADEEC | NATO air defence electronic environment committee | |
| NADGE | NATO air defence ground environment | |
| NADI | national disengagement intention | |
| NADREP | national armament director representative | |
| NADS | North Atlantic defence system | |
| NAE | National Adminstrative Expense | |
| NAEGIS | NATO AEW Ground Environment Integration Segment | |
| NAEW | NATO airborne early warning | AC/259(SURV)N/21 |
| NAEW&C | NATO airborne early warning and control system | AC/317-N/798 |
| NAEWF | NATO Airborne Early Warning Force | |
| NAFAG | NATO air force armaments group | |
| NAFIN | Netherland armed forces integrated network | |
| NAFIN | Netherlands Armed Forces Integrated Network | |
| NAH | NACISA ATM Handbook | |
| NAIS | Norwegian Aeronautical Information System | |
| NALLA | National Allied Long Lines Agency | |
| NALS | national logistic support | |
| NAMILCOM | North Atlantic Military Committee | |
| NAMMO | NATO multi-role combat aircraft development and production management office | |
| NAMP | NATO annual manpower plan | |
| NAMSA | NATO Maintenance and Supply Agency | |
| NAMSO | NATO maintenance and supply organization | |
| NANNAS | NATO net-number assignment system | |
| NAPMA | NATO AEW&C Programme Management Agency | |
| NAPMA | NATO AWAC progamme management agency | |
| NAPMO | NAEW&C programme management organization | AC/317-N/798 |
| NAPO | NATO production objective | |
| NAPR | NATO armaments planning review | |
| NAS | network access system | |
| NAS | Network Administration System | |
| NASEWP | NATO SATCOM enhancement working parts | |
| NASIP | NAEW System Improvement Plan | |
| NASIS | NATO subject indicator sytem | |
| NASNET | NATO switched network | |
| NATEX | national expert | |
| NATINAD | NATO Integrated Air Defence | |
| NATINADS | NATO integrated air defence system | |
| NATO | North Atlantic Treaty Organization | |
| NATOCLIP | NATO commanders long term infrastructure plan | AC/317-N/798 |
| NATOCLIP | NATO Commanders' Listing of Infrasructure Projects | |
| NATS | National Air Traffic Services | |
| NB | maval base | |
| NBC | Nuclear, Biological and Chemical | |
| NBDS | narrow band digital system | |
| NBS | NATO Base Standard | |
| NBSV | narrow band secure voice | STC TN-006 |
| NBSVE | narrow band secure voice equipment | |
| NBSVS | narrow band secure voice system | NACISA/APD/04.07.00(95)001 |
| NC | NATO confidential | |
| NC3-PCO | NATO Consultation, Command and Control (C3) - Planning Coordination Office | |
| NC3-PSG | NATO C3 - Planning Steering Group | |
| NC3A | NATO C3 Agency | |
| NC3B | NATO C3 Board | |
| NC3CO | NATO C3 coordination office | |
| NC3MP | NATO C3 Master Plan | To be replaced by NATO C3 Improvement Plan |
| NC3O | NATO C3 Organisation | |
| NC3P-CMG | NATO C3 Planning - Coordination Management Group | |
| NC3R | NATO C3 Restructuring Team | |
| NC3REPs | Group of National C3 REPresentatives | |
| NC3RT | NATO C3 Restructuring Team | |
| NCAA | National Civil Aviation Agency | |
| NCAA | NATO civil aviation agency | |
| NCAB | NATO civil aviation board | |
| NCAIC | national civil aviation information centre | |
| NCAP | NATO conventional armaments plan | |
| NCB | national competitive bidding | |
| NCC | national control centre | |
| NCC | Network Control Center | |
| NCCAP | NATO CIS contingency assets pool | AC/317/SEC/94/19 |
| NCCCS | NATO C3 system | |
| NCCDPC | replaced by NACISC in 1987 | |
| NCCIS | NATO Command and Control Information System | |
| NCCP | Nuclear Command & Control Procedure | |
| NCDN | NATO common user data transfer network | |
| NCDS | NATO common user data transfer system | |
| NCEB | replaced by NACISC in 1987 | |
| NCEP | NATO Civil Emergency Planning | |
| NCEPA | NATO Civil Emergency Planning Authority | |
| NCFI | NATO common funded infrastructure | |
| NCIR | National CI Representative | |
| NCIS | NATO Common Interoperability Standards | |
| NCIS | NATO communication and information system | |
| NCIS | NATO Communications Interoperability Standards | |
| NCISCMP | NCIS configuration management plan | |
| NCMB | NATO CALS management board | |
| NCN | NATO common user network | |
| NCN | NATO communication network | AC/317-N/560 |
| NCN | NATO core network | |
| NCN-NTR | NATO Communications Networks - Near Term Review | |
| NCNI | NATO Core Network Interface | |
| NCP | network control point | |
| NCPA | NATO civil peacetime agency | |
| NCS | NATO committee for standardisation | |
| NCS | NATO communications school | |
| NCS | NATO Core Switch | |
| NCS | naval combat system | |
| NCS | Naval Control of Shipping | |
| NCS | network control station | STC CSNI final report 22/9/95 |
| NCS | Network Control System | |
| NCSA | national center for supercomputing applications | ACE ACCIS core cap specs |
| NCSARS | naval control of shipping automated routing system | |
| NCSC | national computer security centre | |
| NCTI | Non Co-operative Target Identification | |
| NCWA | NATO Civil Wartime Agency | NCEP |
| NDA | National Distribution Agency | |
| NDA | national distribution authority | |
| NDA | NATO data administration | |
| NDA | NATO data administrator | |
| NDAC | nuclear defence affairs committee | |
| NDAG | NATO Data Administration Group | |
| NDAO | NATO Data Administration Office | |
| NDAP | NATO data administration programme | ADSIA(ADP)-C-007-96 |
| NDC | NATO defense college | |
| NDDN | NATO digital data network | |
| NDDN | Norwegian Defence Digital Network | Ex Strong Resolve 95 |
| NDI | Nationality Identifier | |
| NDI | Non - developmental Items | |
| NDIS | network driver interface specifications | |
| NDL | Database Language | |
| NDMA | NATO Data Management Authority | |
| NDMA | NATO Directory Management Authority | |
| NDMC | NATO Defence Manpower Committee | |
| NDMD | NATO data management doctrine | |
| NDMD | NATO Directory Management Domain | |
| NDMO | NATO data management operations | |
| NDMP | NATO Defence Manpower Plan | |
| NDN | national data network | |
| NDN | National Defence Network | |
| NDSN | NATO digital switched network | |
| NDSS | NAMSA Depot Supply System | |
| NDTMS | NATO wide data and transport messaging service | AC/317-N/841 |
| NDTS | NATO data transfer service | |
| NEC | Nothern European Command | |
| NECCIP | NEC communications improvement plan | |
| NECS | NATO emergency communications system | |
| NEDB | NATO emitter data base | |
| NEDBAG | NATO emitter data base advisory group | |
| NEFMA | NATO EFA developm., production & logistic managem. agency | |
| NEMCA | NATO electro-magnetic compatibility analysis | |
| NEMR | North East military region | |
| NES | NATO ESM system | |
| NETBEUI | Network BIOS Enhanced User Interface | |
| NETBIOS | Network Basic Input/Output System | |
| NETF | NATO expanded task force | |
| NETMAX | network management information exchange | |
| NEWAC | NATO electronic warfare advisory committee | |
| NEWMAG | NATO EW monitor and assessment group | cancelled in 1989 |
| NEWVAN | NATO EW van | MEWSG phase III |
| NEWWG | NATO electronic warfare working group | |
| NFI | NATO Format Identifier | |
| NFS | NATO forces structure | |
| NFS | NATO Furnished Sofware | |
| NFS | Network File System | |
| NGCS | NATO GPS Communication System | |
| NGIFF | New Generation IFF | |
| NGTS | NICS general technical specification | |
| NHMO | NATO HAWK management office | |
| NHPLO | NATO HAWK production and logistic organization | |
| NIADS | NATO integrated air defence system | |
| NIAG | NATO industrial advisory group | |
| NIB | NATO intelligence board | |
| NIB | non interference basis | |
| NICS | NATO Integrated Communication System | |
| NICSMA | NICS Management Agency | Predecessor organisation of NACISA and NACOSA |
| NICSOI | NICS Operation Instruction | |
| NICT | national information centre for transport | |
| NID | network inside dialling | |
| NID | network intrusion detection | |
| NIDS | NATO integrated data service | |
| NIDS | NATO integrated data system | |
| NIDTS | NATO initial common user data transfer service | NACISA/APD/04.07.00(95)001 |
| NIDTS | NATO Initial Data Transfer Service | |
| NIDTS | NATO Integrated Digital Transmission System | |
| NIES | New Information Exchange System | |
| NIF | NATO Interoperability Framework | NRC/3-N(96)1 Rev. 7.2.96 |
| NIFS | NATO Integrated Financial System | |
| NIFTI | NATO interoperability framework initiative | weekly minutes 6-12-95 |
| NIG | NCN / IVSN Gateway | |
| NIIS | NATO interconnected information system | |
| NILE | NICS Improved Link 11 | HF management maritime link |
| NILS | Naval Information Link-up System | |
| NILS | Network Internal Layer Structure | |
| NIMD | NATO International Management Domain | |
| NIMIC | NATO intensive munitions information centre | |
| NIMISS | NATO Integral Maritime Intelligence Support System | |
| NIMP | NATO Interoperability Management Plan (Short-form) | |
| NIP | NADGE implementation plan | |
| NIPD | NATO interoperability planning document | |
| NIS | NATO Identification System | |
| NIS | NATO International Staff | |
| NISA | NATO ISDN Security Architecture | |
| NISCO | NATO Identification System Coordintion Office | |
| NISDN | NATO ISDN | |
| NISEC | NATO Identification System Employment Concept | |
| NISEG | NATO in-service goals | |
| NISSIM | NIS-Simulator | |
| NIST | national institute of standards and technology | |
| NJCEC | NATO joint communications and electronics board | |
| NJFA | NATO Joint Frequency Agreement | |
| NJOTS | Naval Joint Operations Tactical System | |
| NL | Network Layer | |
| NLC | national logistic command | |
| NLO | National Liaison Officer | |
| NLSO | NATO logistics support organisation | |
| NLSP | network layer security protocol | |
| NM | network management | Ex Strong Resolve 95 |
| NMA | NATO Military Authority | |
| NMAG | NATO Naval Armaments Group | |
| NMC | Network Management Centre | |
| NMCC | Network Management and Control Centre | |
| NMD | NATO Management Domain | |
| NMICC | NATO maritime intelligence coordination centre | |
| NMICCACS | NATO Maritime Intelligence Coordination Centre Atlantic Computer System | |
| NMIS | NATO management information system | |
| NMNP | NATO master navigation plan | |
| NMO | network management office | |
| NMOS | NATO Maritime Op-Intel System | |
| NMOS | NATO Maritime Operation and Intelligence Support | |
| NMPA | NATO maritime patrol aircraft | |
| NMR | National Military Representative | |
| NMR | NATO military requirement | |
| NMS | NATO message system | |
| NMT | National Movement Team | |
| NNCC | NATO network control centre | |
| NNCS | NICS network control system | |
| NNCS2 | NATO Network Control System - Project 2 | |
| NNDB | NICS network data base | |
| NNG | NATO/National Gateway | |
| NNMT | NATO national MMHS team | AC/317-N/846 |
| NNPS | NATO nuclear planning system | CP 5A0015 |
| NNS | non NICS subscriber | |
| NOAPS | NATO Oceanographic and Acoustic Prediction System | |
| NOB | NATO oil board | |
| NOB | Naval Order of Battle | |
| NOC | NATO operating centre | |
| NOD | network outside dialling | |
| NODECA | Norwegian Defense Communication Agency | |
| NOIS | NATO Operational Interoperabilty Standards | |
| NOMAN | NTTS operations and management | |
| NOP | nuclear operation plan | |
| NORCCIS | Norwegian CCIS | |
| NORLANT | Northern sub-area Atlantic | |
| NOS | NATO office of security | AC/317-N/846 |
| NOSA | NATO open security architecture | repl. by STANAG 4250-2 |
| NOSA | NATO Open Systems Architecture | |
| NOSA | NATO open systems security architecture | |
| NOSA | NATO OSI Security Architecture | |
| NOSE | NATO open systems environment | NACISA/APD/04.07.00(95)001 |
| NOSIP | NATO open systems interconnection profile | AC/302-D/700 rev |
| NOTS | NATO Off-The-Shelf (software) | |
| NP | Network Protocol | |
| NPC | NATO Programming Center | |
| NPDU | network protocol data unit | STC CSNI final report 22/9/95 |
| NPG | Nuclear Planning Group | |
| NPICS | NATO Protocol Implementation Conformance Statement | |
| NPIS | NATO Procedural Interoperability Standards | |
| NPLO | NATO Production and Logistic Organisation | |
| NPM | national project manager | STC CSNI final report 22/9/95 |
| NPRL | NATO Profile Requirements List | |
| NPS | NATO precautionary system | |
| NPS | nuclear planning system | |
| NPSC | NATO project steering committee | |
| NR | NATO restricted | |
| NRA | NATO refugees agency | |
| NRC | naval reporting centre | |
| NRL | Naval Research Laboratory (US) | |
| NRM | NATO Reference Model | |
| NRP | NATO reference point | |
| NRP | NATO Registration Procedure | |
| NRSG | NATO rationalisation sub-group | |
| NRSG | Network Rationalisation Sub-Group | |
| NRT | near real time | |
| NS | NATO secret | |
| NS | Network Service | |
| NSA | National Security Agency (US) | |
| NSA | national shipping authority | NCEPA |
| NSA | NATO standardisation agency | |
| NSAP | Network Service Access Point | |
| NSC | NATO security committee | |
| NSC | network security centre | |
| NSCC | nuclear support coordination centre | |
| NSD | NATO Support Depot | |
| NSD | Network Service Division | |
| NSIP | NATO security investment programme | |
| NSIS | NATO standard interface specification | |
| NSM | nuclear strike message | |
| NSMS | NATO spectrum management system | |
| NSO | NATO Standardisation Office | |
| NSP | NATO standardization programme | |
| NSP | NATO Standardized Profile | |
| NSP | nuclear strike plan | |
| NSPICS | NATO ISO Standardized Profile Implementation Conformance Statement | |
| NSR | NATO staff requirement | |
| NST | NATO Staff Target | |
| NSTN | Naval Shore Telecommunication Network | |
| NSU | nodal switching unit | |
| NSVN | NATO secure voice equipment | |
| NSWG | NACSI special working group | |
| NT | Network Termination | |
| NT | Northern Telecom | |
| NTC | national terretorial command | |
| NTCF | NATO tactical fighter centre | |
| NTDI | NATO Target Data Inventory | |
| NTDS | naval tactical data transmission system | STC CSNI final report 22/9/95 |
| NTG | NATO task group | |
| NTIB | NATO tactical intelligence broadcast | |
| NTIS | national technical information service | |
| NTIS | NATO Technical Interoperability Standards | |
| NTISTS | NATO technical interface standards transition strategy | NACISA USD 23.01.00(93)01 |
| NTM | national technical manager | STC CSNI final report 22/9/95 |
| NTM | network terminal modem | |
| NTN | national tactical network | |
| NTN | NATO transit network | |
| NTPDS | NATO transit packet data switching | |
| NTTS | NATO terrestrial transmission system | STC TN-222 |
| NU | NATO unclassified | |
| NUSS | NATO universal security system | |
| NWCN | NATO-wide communication network | |
| NWCS | NATO-wide communications system | |
| NWE | Nuclear Weapons Effects | |
| NWOO | NATO wartime oil organisation | |
| NWRP | nuclear weapons release procedures | |
| NWTI | Nuclear Weapon Technical Inspection |