List of acronyms: N

(Main list of acronyms)


 * n – (s) Nano
 * N – (s) Newton – Nitrogen – North

N0–9

 * N3F – (i) National Fantasy Fan Federation

NA

 * na – (s) Nauruan language (ISO 639-1 code)
 * nA – (s) Nanoampere
 * Na – (s) Sodium (Latin Natrium)
 * NA
 * (s) Namibia (ISO 3166 digram)
 * (i) Narcotics Anonymous
 * National Archives
 * Negative Acknowledge
 * N/A
 * (i) Neurotics Anonymous
 * not available/applicable
 * NAA – (p) N-Acetylaspartate
 * NAAD – (i) North American Air Defense
 * NAAFI
 * (a) Navy, Army and Air Force Institute (UK)
 * (a) No Ambition And Fuckall Interest (RSA army slang)
 * NAAK – (a) Mark I NAAK, Nerve Agent Antidote Kit
 * NAACP – (i) National Association for the Advancement of Colored People ("N double-A CP")
 * NAAQS – (a) National Ambient Air Quality Standards
 * NAAWS – (i) NATO Anti-Air Warfare System
 * NABCI – (a) North American Bird Conservation Initiative ("nab-see")
 * NAC
 * (i/a) National Agency Check
 * U.S. Naval Avionics Center
 * U.S. Navy Advanced Concepts
 * NOAD ADVENDO Combinatie, the full name of the Dutch football club NAC Breda
 * North Atlantic Council
 * Northern Area Command
 * NACA – (i) (U.S.) National Advisory Committee for Aeronautics (1915–1958, became NASA)
 * NACC – (i) North Atlantic Cooperation Council
 * NACISA – (a) NATO Communications and Information Systems Agency
 * NACMA – (p) NATO Air Command and Control System Management Agency
 * NACRA – (a) North America Caribbean Rugby Association (more specifically rugby union), a former name of Rugby Americas North
 * NAD – (s) Namibian dollar (ISO 4217 currency code)
 * NAEC – (i) U.S. Naval Air Engineering Center
 * NAF
 * (a) NATO Architecture Framework
 * (i) Naval Air Facility
 * NAFLD – (i) NonAlcoholic Fatty Liver Disease
 * NAFO – (a) Northwest Atlantic Fisheries Organization
 * NAFERA – (a) Native American Free Exercise of Religion Act
 * NAFTA – (a) North American Free Trade Agreement
 * NAGPRA – (a) Native American Graves Protection and Repatriation Act
 * NAI
 * (i) Named Area of Interest
 * Network Access Identifier
 * NAICS – (a) North American Industry Classification System
 * NAIL – (i) Neurotics Anonymous
 * NAILS – (a) National Airspace Integrated Logistics System
 * NAIRU – (a) Non Accelerating Inflation Rate of Unemployment
 * NAK – (p) Negative Acknowledge
 * NAM – (s) Namibia (ISO 3166 trigram)
 * NAMBLA – (a) North American Man-Boy Love Association
 * NAMRL – (i) Naval Aerospace Medical Research Laboratory
 * NaN – (i) Not A Number (computing)
 * NANP – (i) North American Numbering Plan (telephone)
 * NAO – (i) UK National Audit Office
 * NAPDD – (i) Non-Acquisition Program Definition Document ("nap-dee-dee")
 * NAPS – (a) Navy Acquisition Procedures Supplement
 * NARA – (i) (U.S.) National Archives and Records Administration
 * NARAL – (a) National Abortion Rights Action League
 * NARDAC – (a) Naval Regional Data Automation Center
 * NARDIC – (a) U.S. Navy Acquisition Research and Development Information Center
 * NARP – (a) Non-Athletic Regular Person
 * NARPV – (i) National Association for Remotely Piloted Vehicles
 * NAS
 * (i) National Academy of Sciences
 * National Air Space
 * National Audubon Society
 * Naval Air Station
 * New Attack Submarine
 * NASA
 * (a) National Aeronautics and Space Administration
 * North American Saxophone Alliance
 * NASB – (i) New American Standard Bible
 * NASCAR – (a) National Association for Stock Car Auto Racing
 * NASDAQ – (a) National Association of Securities Dealers Automated Quotations
 * NASED – (a) National Association of State Election Directors
 * NASH – (a) Non-Alcoholic Steatohepatitis
 * NASP
 * (p) National Aerospace Plane
 * (i) National Archery in the Schools Program
 * NASS – (a) National Association of Secretaries of State
 * NASUWT - National Association of Schoolmasters / Union of Women Teachers (UK trade union)
 * NatGeo - (a) National Geographic
 * NATO
 * (a) National Association of Theatre Owners
 * North Atlantic Treaty Organization
 * nau – (s) Nauruan language (ISO 639-2 code)
 * NaUKMA – (p) National University of Kyiv-Mohyla Academy
 * nav – (s) Navajo language (ISO 639-2 code)
 * NAV – (p) Navigation[al]
 * NAVCAMS – (p) Naval Communications Area Master Station
 * NAVCC – (p) National Audio-Visual Conservation Center
 * NAVCC (Navy) – (p) Navy Component Commander
 * NAVCENT – (p) Naval Forces U.S. Central Command
 * NAVDAC – (p) Naval Data Automation Command
 * NAVEUR – (p) Naval Forces U.S. European Command
 * NAVFE – (p) U.S. Naval Forces, Far East
 * NAVFOR – (p) Naval Force
 * NAVMACS – (p) Naval Modular Automatic Communication Subsystem
 * NAVNET – (p) Navy Network
 * NAVS – (a) Non-Cooperative Airborne Vector Scoring
 * NAVSAT – (p) Navigation Satellite
 * NAVSPACECOM – (p) U.S. Navy Space Command
 * NAVSPASUR – (p) U.S. Naval Space Surveillance System
 * NAVSTAR – (p) Navigation Satellite Timing And Ranging
 * NAVTACNET – (p) Navy Tactical Network
 * NAWC – (i) U.S. Naval Air Warfare Center
 * NAWIRA – (a) North America and West Indies Rugby Association, the original name of the organization now known as Rugby Americas North
 * NAWMP – (a) North American Waterfowl Management Plan ("gnaw-wump")

NB

 * nb – (s) Norwegian Bokmål language (ISO 639-1 code)
 * Nb – (s) Niobium
 * NB – (s) New Brunswick (postal symbol) – (i) nota bene (Latin, "mark well")
 * NBA – (i) National Basketball Association
 * NBACC – (i) U.S. National Biodefense Analysis and Countermeasures Center ("enn-back")
 * NBC – (i) National Broadcasting Corporation – Nuclear, Biological, and Chemical
 * NBCRS – (i) NBC (Nuclear, Biological, and Chemical) Reconnaissance System
 * NBIC – (i) Nanotechnology, Biotechnology, Information Technology, Cognitive Science
 * nbl – (s) Southern Ndebele language (ISO 639-2 code)
 * NBL – (a) National Basketball League (Australia)
 * NBT – (p) Nitroblue tetrazolium (assay)

NC

 * nC – (s) Nanocoulomb
 * NC
 * (i) Network Computer
 * (s) New Caledonia (ISO 3166 digram)
 * (i) Node Center
 * Nonconsensual
 * Normally Closed
 * (s) North Carolina (postal symbol)
 * NCA – (i) National Command Authority
 * NC3A or NC3A – (i) NATO Consultation, Command and Control Agency
 * NCAA – (i) National Collegiate Athletic Association ("NC double A")
 * NCAR – (i) U.S. National Center for Atmospheric Research
 * NCB – (i) National Codification Bureau
 * NCCAM – (i) U.S. National Center for Complementary and Alternative Medicine
 * NCCUSL – (i) National Conference of Commissioners on Uniform State Laws (U.S.)
 * NCDDR – (i) U.S. National Center for the Dissemination of Disability Research
 * NCES
 * (i) U.S. National Center for Education Statistics
 * Net-Centric Enterprise Services
 * NCI – (i) U.S. National Cancer Institute
 * NCIS
 * (i) National Criminal Intelligence Service (British)
 * Naval Criminal Investigative Service (U.S. Navy; see also NCIS, a U.S. TV series based on this unit)
 * NCL – (s) New Caledonia (ISO 3166 trigram)
 * NCLR – (i) National Council of La Raza
 * NCMO – (i) No Commitment Make Out
 * NCND
 * (i) Noncircumvention and Nondisclosure
 * (i) Neither Confirm Nor Deny
 * NCO – (i) Noncommissioned Officer
 * NCP – (i) Net Contracted Purchases
 * NCR – (i) National Cash Register Co.
 * NCTR – (i) Noncooperative Target Recognition
 * NCW – (i) Network Centric Warfare

ND

 * nd – (s) Northern Ndebele language (ISO 639-1 code)
 * Nd – (s) Neodymium
 * N.D. – (i) Nobilis Domina (noble woman)
 * ND
 * (i) Nondisclosure
 * (s) North Dakota (postal symbol)
 * NDA - (i) Non-Disclosure Agreement
 * NDAA – (i) U.S. National Defense Authorization Act
 * NDBP – (i) Non-Departmental Public Body (Scotland)
 * NDC - (i) National Drug Code
 * NDCC – (i) New Directions Counseling Center (Concord, California)
 * nde – (s) Northern Ndebele language (ISO 639-2 code)
 * NDH
 * (i) Neue Deutsche Härte (German, "new German hardness"—heavy metal genre)
 * Nezavisna Država Hrvatska (Croatian, "Independent State of Croatia"—Nazi puppet state)
 * ndo – (s) Ndonga language (ISO 639-2 code)
 * N-dof or NDOF – (i) Number of Degrees of Freedom
 * NDP – (i) New Democratic Party (Canada)
 * NDS – Nintendo DS
 * NDU – (i) National Defense University (Washington, DC)

NE

 * ne – (s) Nepali language (ISO 639-1 code)
 * Ne – (s) Neon
 * NE
 * (s) Nebraska (postal symbol)
 * Niger (ISO 3166 digram)
 * (i) North-East
 * NEA
 * (i) National Education Association (U.S. labor union)
 * Near-Earth Asteroid
 * Nuclear Energy Agency (OECD)
 * NEAT
 * Near-Earth Asteroid Tracking - (a)
 * National Emergency Access Target (a) (Au Health)
 * NEC
 * (i) Network-enabled capability
 * Nijmegen Eendracht Combinatie (Dutch, "Nijmegen Unity Combination"; football club formed by the 1910 merger of the Nijmegen and Eendracht clubs)
 * Nippon Electric Company, the original English-language name of the company now known as NEC
 * (p) Northeast Conference (U.S. college sports)
 * NED – (s) Netherlands (IOC and FIFA trigram, but not ISO 3166)
 * NECTEC – (a) National Electronics and Computer Technology Center (Thailand)
 * NEI
 * (i) National Eye Institute
 * Not Enough Information
 * Nuclear Energy Institute
 * NEIC (i)
 * U.S. National Earthquake Information Center
 * National Economic Intelligence Committee (Nigeria)
 * National Energy Information Center (U.S. DOE)
 * National Enforcement Investigations Center (U.S. EPA)
 * nem con – (p) nemine contradicente (Latin, "no one contradicting")
 * nem diss – (p) nemine dissentiente (Latin, "no one dissenting")
 * NEMS – (i) National Energy Modeling System (USDOE-EIA)
 * NEO
 * (i) Near-Earth Object
 * Non-combatant Evacuation Operations
 * nep – (s) Nepali language (ISO 639-2 code)
 * NEPA – (a) National Environmental Policy Act
 * NER – (s) Niger (ISO 3166 trigram)
 * NERF - (a) Non-Expanding Recreational Foam
 * NERICA – (p) New Rice for Africa
 * NESDIS – (a) National Environmental Satellite, Data and Information Service
 * NESP – (i) NSA/CSS Enterprise Standards Program
 * NESS-T – (p) Near-Earth Space Surveillance – Terrestrial project
 * NET
 * (i) National Educational Television
 * (i/a) NCAA Evaluation Tool, a metric used in the NCAA Division I men's and women's basketball tournament selection process
 * NETCU – (i) (UK) National Extremism Tactical Co-ordination Unit
 * NETL – (a) (US) National Energy Technology Laboratory
 * NETWARS – (p) Network Warfare Simulation
 * NEWHA – (i) New England Women's Hockey Alliance
 * NEWS
 * (a) Navy Electronic Warfare Simulator
 * North, East, West, South
 * NEX – (p) Navy EXchange

NF

 * nF – (s) Nanofarad
 * NF
 * (s) Newfoundland (and Labrador) (obsolete postal code, replaced by NL)
 * Norfolk Island (ISO 3166 digram)
 * NFA
 * (i) (U.S.) National Firearms Act (often used to refer to the guns and accessories regulated under this law)
 * No-Fire Area
 * NFC
 * (i) National Football Conference
 * Near-field communication
 * NFER – (i) National Foundation for Educational Research
 * NFG – (i) No F**king Good
 * NFHS – (i) National Federation of State High School Associations
 * NFI – (i) Not F****** Interested
 * NFK – (s) Norfolk Island (ISO 3166 trigram)
 * NFL
 * (i) National Football League
 * National Forensic League, original name of the National Speech and Debate Association
 * No-Fire Line
 * Nfld – (p) Newfoundland
 * NFPA – (a) National Fluid Power Association (United States)
 * NFT
 * (p) Neurofibrillary tangle
 * (i) No Further Text
 * Non-fungible token
 * NFS
 * (i) Network File System

NG

 * ng – (s) Nanogram – Ndonga language (ISO 639-1 code)
 * NG
 * (i) Natural Gas
 * Next Generation
 * (s) Niger (FIPS 10-4 country code)
 * Nigeria (ISO 3166 digram)
 * NGA
 * (i) National Geospatial-Intelligence Agency
 * (s) Nigeria (ISO 3166 trigram)
 * NGH – Northern General Hospital
 * ngl – (i) Not gonna lie
 * NGATS – (i) New Generation Army Targetry System
 * NGIC – (a) National Ground Intelligence Center ("Injick")
 * NGN – (s) Nigerian naira (ISO 4217 currency code)
 * NGO – (i) non-governmental organization
 * NGR – (s) Nigeria (IOC trigram, but not ISO 3166 or FIFA)
 * NGS – (i) Naval Gunfire Support

NH

 * nH – (s) Nanohenry
 * NH – (s) New Hampshire (postal symbol) – New Hebrides (ISO 3166 digram; obsolete 1980) – Vanuatu (FIPS 10-4 country code; from New Hebrides)
 * N.H. – (i) Nobilis Homo (noble man)
 * NHANES – (i) National Health and Nutrition Examination Survey
 * NHB – (s) New Hebrides (ISO 3166 trigram; obsolete 1980)
 * NHB – (i) No holds barred
 * NHL – (i) National Hockey League
 * NHO – (i) Næringslivets Hovedorganisasjon (Confederation of Norwegian Enterprises, a Norwegian employers' organisation)
 * NHRA – (i) National Hot Rod Association
 * NHS – (i) National Health Service (UK)

NI

 * Ni – (s) Nickel
 * NI
 * (s) Nicaragua (ISO 3166 digram)
 * Nigeria (FIPS 10-4 country code)
 * NIAAA – (i) U.S. National Institute on Alcohol Abuse and Alcoholism
 * NIAID – (a) National Institute of Allergies and Infectious Disease
 * NIAG – (a) NATO Industrial Advisory Group
 * NIAMD – (i) National Institute of Arthritis and Musculoskeletal Diseases
 * NIB – (i) New In Box (Internet auction/trading listings)
 * NIBP – (i) Non-invasive blood pressure monitor
 * NIC
 * (a) Network Interface Card
 * (s) Nicaragua (ISO 3166 trigram)
 * NicA – (i) Nicotine Anonymous
 * NICAP – (a) National Investigations Committee on Aerial Phenomena
 * NICE – (p) UK. National Institute for Health and Clinical Excellence
 * NICHD – National Institute of Child Health and Human Development
 * NICP – (i) National Inventory Control Point
 * NIDDK – (i) National Institute of Diabetes and Digestive and Kidney Diseases
 * NIDRR – (i) National Institute on Disability Research and Rehabilitation
 * NIEHS – (i) National Institute of Environmental Health Sciences
 * NIG – (s) Niger (IOC and FIFA trigram, but not ISO 3166)
 * NIH
 * (i) National Institutes of Health
 * Not Invented Here
 * NIIN – (i) National Item Identification Number
 * NIL
 * (i) Name, image, and likeness (referring to U.S. student athlete compensation)
 * (p) Nanoimprint lithography
 * (i) Nomina im Indogermanischen Lexikon (German, "Nominals in the Indo-European Lexicon") – etymological dictionary of Proto-Indo-European nominals
 * NIMA – (a) National Imagery and Mapping Agency (became NGA)
 * NIMBY – (a) Not In My Back Yard (See NOME)
 * NIMG – (i) Not In My Generation
 * NiMH – (p) nickel metal hydride ("Ni" is the chemical symbol for nickel)
 * NIMH
 * (i) National Institute of Medical Herbalists
 * National Institute of Mental Health
 * NIN – (i) Nine Inch Nails (band)
 * NIO – (s) Nicaraguayan cordoba oro (ISO 4217 currency code)
 * NIOSH – (a) National Institute for Occupational Safety and Health (U.S.)
 * NIPR – (i) National Institute of Polar Research (Japan)
 * NIPT - Non-Invasive Prenatal Testing
 * NIR – (s) Northern Ireland (FIFA trigram; not eligible for an ISO 3166 or IOC trigram)
 * NISAC – (a) U.S. National Infrastructure Simulation and Analysis Center
 * NISCAP – (a) NSA Information System Certification and Accreditation Program
 * NISER – (i) National Institute of Science Education and Research
 * NIST – (a/i) National Institute of Standards and Technology
 * NIT
 * (i) National Invitation Tournament (U.S. college basketball)
 * (i) National Institutes of Technology (India)
 * NITFS – (i) National Imagery Transmission Format Standard
 * NIU – (s) Niue (ISO 3166 trigram)
 * NIV
 * (i) New International Version (Bible translation)
 * Non-invasive ventilation

NJ

 * nJ – (s) Nanojoule
 * NJ – (s) New Jersey (postal symbol)
 * NJHS – (s) National Junior Honor Society
 * NJPW – (i) New Japan Pro-Wrestling

NK

 * nK – (s) Nanokelvin
 * NKA – No Known Allergies
 * N/K/A – Now Known As
 * NKJV – (i) New King James Version (Bible translation)
 * NKVD – (i) Narodnyi Komissariat Vnutrennikh Del (Russian "People's Commissariat of Internal Affairs") (1934–1954)

NL

 * nl – (s) Dutch language (ISO 639-1 code)
 * nL – (s) Nanolitre
 * NL
 * (s) Netherlands (ISO 3166 and FIPS 10-4 country code digram)
 * Newfoundland and Labrador (postal symbol)
 * NLB – (i) Non-Linear Battlefield
 * nld – (s) Dutch language (ISO 639-2 code)
 * NLD – (s) Netherlands (ISO 3166 trigram)
 * NLF – (i) National Liberation Front (disambiguation)
 * NLL – (i) National Lacrosse League
 * NLIC - (p) NetLicensing (license file extension)
 * NLOS-LS – (i) Non Line Of Sight-Launch System
 * NLP
 * (i) Natural Language Processing
 * Neuro-Linguistic Programming (pseudoscience)
 * NLW – (i) Non-Lethal Weapon

NM

 * nm – (s) nanometer
 * nm, NM – Nautical mile
 * N·m, Nm – Newton meter
 * NM – (s) New Mexico (postal symbol)
 * NMCI – (i) Navy Marine Corps Intranet
 * NMCS – (i) Not Mission Capable Supply (SM&R code)
 * NMD – (i) U.S. National Missile Defense
 * NMN – (i) No middle name
 * NMOS – (i/a) N-type/Negative Metal-Oxide-Semiconductor transistor ("enn-moss")
 * NMSG – (i) NATO Modelling and Simulation Group
 * NMR – (i) Nuclear Magnetic Resonance
 * NMHNFG – (i) Not Made Here, No Fucking Good

NN

 * nn – (s) Norwegian Nynorsk language (ISO 639-1 code)
 * nN – (s) Nanonewton
 * NNW – (i) North North-East
 * nno – (s) Norwegian Nynorsk language (ISO 639-2 code)
 * NNSA – (i) U.S. National Nuclear Security Administration
 * NNW – (i) North North-West

NO

 * no – (s) Norwegian language (ISO 639-1 code)
 * No – (s) Nobelium
 * NO
 * (s) Nitric Oxide
 * (i) Normally Open
 * (s) Norway (ISO 3166 and FIPS 10-4 country code digram)
 * NOAA – (a) U.S. National Oceanic and Atmospheric Administration
 * NOAF – (i) Norwegian Air Force
 * NOAO – (i) National Optical Astronomy Observatory
 * nob – (s) Norwegian Bokmål language (ISO 639-2 code)
 * NOC – (i) UK. National Oceanography Centre
 * NODEF – (a) NATO Oceanographic Data Exchange Format
 * No-FEAR – (p) Notification and Federal Employee Antidiscrimination Retaliation Act (2002)
 * NOK – (s) Norwegian krone (ISO 4217 currency code)
 * NOLA – (p) New Orleans, Louisiana (LA is the official postal code for Louisiana)
 * NOGI – (a) New Orleans Grande Isle (award for diving)
 * NOLF – (i) Navy OutLying Field
 * NOM – (i) Novus Ordo Missae or New Ordinary of the Mass (sometimes abbreviated to simply "NO")
 * NOME – Not on Mars Either
 * NoMBO – (p) Non-mine, Mine-like Bottom Object
 * NOME – Not on Mars Either (see NIMBY)
 * NOPA – (i) National Office Products Alliance – National Office Products Association
 * nor – (s) Norwegian language (ISO 639-2 code)
 * NOR – (s) Norway (ISO 3166 trigram)
 * NORAD – (p) North American Aerospace Defense Command
 * NORCECA – (p) North, Central America and Caribbean Volleyball Confederation
 * NORELPREF – No religious preference
 * NORML – (a) National Organization for the Reform of Marijuana Laws ("normal")
 * NORTHAG – (p) Northern Army Group
 * NOS
 * (i) Network Operating System
 * New Old Stock (Internet auction/trading listings)
 * Nitric Oxide Synthase (enzyme)
 * NOSA – (i) NATO OSI Security Architecture
 * NOTAFLOF – (a) No One Turned Away For Lack Of Funds
 * NOTAM – (p) Notice to Airmen
 * NOW – (a) National Organization for Women

NP

 * Np
 * (p) Neap tide (nautical charts)
 * (s) Neptunium
 * NP
 * (s) National Permit (authorization used in India to allow trucks to go anywhere in the nation)
 * Nepal (ISO 3166 and FIPS 10-4 country code digram)
 * NPB – (i) Nippon Professional Baseball
 * NPC
 * (i) National Postgraduate Committee
 * National Provincial Championship (New Zealand rugby competition)
 * Navigation Planning Chart
 * Non-Player Character (role-playing games)
 * NPCS – (i) Non-Passenger Coaching stock (in Railways)
 * NPD – (i) Nationaldemokratische Partei Deutschlands (German)
 * NPDI – (i) New Product Development and Introduction
 * NPG – (i) Needline/Network Participation Group
 * NPH – (i) Normal Pressure Hydrocephalus
 * NPL
 * (i) National Priorities List
 * (s) Nepal (ISO 3166 trigram)
 * NPPU - Nose Personal Protection Unit (copper nose insert)
 * NPOV – (i) Neutral Point Of View
 * NPR
 * (i) National Public Radio
 * (s) Nepalese rupee (ISO 4217 currency code)

NQ

 * NQ – (s) Dronning Maud Land (ISO 3166 digram; obsolete 1983)
 * NQOCD – (i) Not Quite Our Class, Dear (or Darling). (Upper-class English slang)
 * NPO –  nothing by mouth

NR

 * nr – (s) Southern Ndebele language (ISO 639-1 code)
 * NR – (s) Nauru (ISO 3166 and FIPS 10-4 country code digram)
 * NRA – (i) National Rifle Association of America
 * NRAO – (i) National Radio Astronomy Observatory
 * NRC
 * (i) National Register of Citizens (India)
 * National Research Council (U.S.)
 * Nuclear Regulatory Commission (U.S.)
 * NRDC – (i) (U.S.) Natural Resources Defense Council
 * NREL – (i) U.S. National Renewable Energy Laboratory
 * NRK – (p) Norsk Rikskringkasting (Norwegian Broadcasting Corporation)
 * NRLA – (i) New Railway Link through the Alps
 * NRMP – (i) National Resident Matching Program (U.S. medicine)
 * NRO – (i) U.S. National Reconnaissance Office
 * NRT – (i) Near Real Time
 * NRTA
 * (i) National Retail Tenants Association
 * National Retired Teachers Association
 * Northwest Regional Transmission Association
 * NRU – (s) Nauru (ISO 3166 trigram)

NS

 * ns – (s) Nanosecond
 * nS – (s) Nanosiemens
 * NS
 * (s) Norfolk Southern Railway (AAR reporting mark)
 * Nova Scotia (postal symbol)
 * Suriname (FIPS 10-4 country code)
 * NSA
 * (i) U.S. National Security Agency
 * Naval Support Activity
 * No Strings Attached
 * NSABB – (i) National Science Advisory Board for Biosecurity
 * NSAID – (i) Non-Steroidal Anti-Inflammatory Drug
 * NSB – (i) Norges Statsbaner (Norwegian State Railways)
 * NSBM – (i) National Socialist black metal
 * NSC – National Security Council
 * NSDA – (i) National Speech and Debate Association (US)
 * NSDAP – (i) Nationalsozialistische Deutsche Arbeiterpartei (German: "German National Socialist Workers Party", the formal name of the Nazi Party)
 * NSDL – (i) National Science Digital Library (US)
 * NSG – (i) National System for Geospatial-Intelligence
 * NSN – (i) National Stock Number
 * NSNA – (i) National Student Nurses' Association
 * NSO – (i) National Standardization Office (ABCA)
 * NSS – (i) (U.S.) Naval Simulation System
 * NST – (i) (UK) Nimrod Software Team
 * NSTAC – (i) National Security Telecommunications Advisory Committee
 * NSV – (i) Nikitin-Sokolov-Volkov heavy machine gun (Russian НСВ Никитина-Соколова-Волкова) ru:ПулеметНСВ-12,7 "Утес"
 * NSW – (i) New South Wales (postal symbol)

NT

 * N/T – (Aa) No text
 * nT – (s) Nanotesla
 * NT
 * (i) National Trust (UK)
 * (s) Saudi–Iraqi neutral zone (ISO 3166 digram; obsolete 1993)
 * (i) New Technology (Windows NT)
 * (s) Northern Territory (Australia) (postal symbol)
 * Northwest Territories (Canada) (postal symbol)
 * NTC
 * (i) National Training Center
 * Negative Temperature Coefficient (thermistor)
 * NTDS – (i) Naval Tactical Data System
 * NTP – (i) Network Time Protocol
 * NTR – (i) Network Time Reference
 * NTRA – (i) National Thoroughbred Racing Association
 * NTSB – (i) National Transportation Safety Board
 * NTSC – (i) National Television Standards Committee (colloquially, Never Twice the Same Color)
 * (i) (Internet Abbreviation:) Nothing To See Here
 * NTV – (i) Non-Tactical Vehicle
 * NTY – (i) (Internet Abbreviations:) Not Tested Yet; (Alternatively) No Thank You
 * NTZ – (s) Iraq-Saudi Arabia Neutral Zone (ISO 3166 trigram; obsolete 1993)

NU

 * NU
 * (s) Nicaragua (FIPS 10-4 country code)
 * Niue (ISO 3166 digram)
 * Nunavut (postal symbol)
 * NUI – (a) No user interface ("noo-ey")
 * NUL
 * (i) Null character (ASCII code of control character)
 * National Urban League
 * NUTS – (a) Nuclear Utilization Target Selection
 * NUWC – (i) U.S. Naval Undersea Warfare Center

NV

 * nv – (s) Navajo language (ISO 639-1 code)
 * nV – (s) Nanovolt
 * NV
 * (i) Naamloze vennootschap (Dutch, "innominate partnership" or "anonymous venture"; i.e. a public limited-liability company)
 * (s) Nevada (postal symbol)
 * NVEOL – (i) Night Vision and Electro-Optics Laboratory
 * NVESD – (i) CERDEC Night Vision and Electronic Sensors Directorate, Fort Belvoir, Virginia
 * NVG – (i) Night Vision Goggles
 * NVL – (i) Night Vision Laboratory

NW

 * nW – (s) Nanowatt
 * NW – (s) North-West
 * NW – (i) Nuclear Weapon
 * NWA – (i) National Wrestling Alliance
 * NWF – (i) National Wildlife Federation
 * NWFZ – (i) Nuclear-Weapon-Free Zone
 * NWHN – (i) U.S. National Women's Health Network
 * nWo – (i) New World Order (see article for explanation of idiosyncratic capitalization)
 * NWOAHM – (i) New Wave of American Heavy Metal
 * NWOBHM – (i) New wave of British heavy metal (sometimes pronounced as if it were an acronym)
 * NWRA – (i) National Wildlife Rehabilitators Association
 * NWSL - (i) National Women's Soccer League (U.S.)
 * NWT – (i) North-West Territories

NX

 * NX
 * (p) Part of computer memory marked as "no execute"
 * (i) Automobile made by Nissan
 * (s) unit of illuminance
 * (p) National Express
 * Net exports
 * NXA – (i) 21st arcade game in the Pump It Up series
 * NXD – (p) Native XML
 * NXE – (i) New Xbox Experience
 * NXG – (p) New Cross Gate station
 * NXL – (i) National XBall League
 * NXN – (p) Nike Cross Nationals
 * NXP – (p) "Next Experience" Semiconductors

NY

 * ny – (s) Chichewa language (ISO 639-1 code)
 * NY – (s) New York (postal symbol)
 * nya – (s) Chichewa language (ISO 639-2 code)
 * NYHA – (i) New York Heart Association
 * NYO – (i) National Youth Orchestra of Great Britain
 * NYRA
 * (i) National Youth Rights Association
 * (a) New York Racing Association (horse racing)
 * NYSE – (i) New York Stock Exchange
 * NYT (disambiguation) – (i) The New York Times

NZ

 * NZ – (s) New Zealand (ISO 3166 and FIPS 10-4 country code digram)
 * NZC – (i) New Zealand Cricket
 * NZD – (s) New Zealand dollar (ISO 4217 currency code)
 * NZL – (s) New Zealand (ISO 3166 trigram)
 * NzL – Noze looan (online/event listings)
 * NZOSS – (i) New Zealand Open Source Society
 * NZR
 * (i) New Zealand Railways
 * New Zealand Rugby (governing body for rugby union)
 * NZRU – (i) New Zealand Rugby Union, the former name of the organisation now known as New Zealand Rugby