| N081 | NROM | Nitride Read-Only Memory | Type of non-volatile memory using nitride layers for charge storage. | Used in embedded systems and consumer electronics. |
| N082 | NRZ-I | Non-Return-to-Zero Inverted | Data encoding scheme with inversion on 1-bit transitions. | Used in digital communication systems. |
| N083 | NSI | Network Security Infrastructure | Framework protecting IT and data networks. | Used in enterprise-level cybersecurity architecture. |
| N084 | NSSL | National Severe Storms Laboratory | U.S. research center studying severe weather. | Provides data for weather forecasting systems. |
| N085 | NTC | Negative Temperature Coefficient | Property where resistance decreases as temperature rises. | Used in temperature sensors and thermistors. |
| N086 | NTLM | NT LAN Manager | Authentication protocol used in Microsoft networks. | Used in Windows for user verification. |
| N087 | NTSC | National Television System Committee | Analog television color encoding system. | Used in U.S. broadcasting before digital TV. |
| N088 | NUM | Numeric | Refers to numerical data or representation. | Used in database field types and programming. |
| N089 | NURBS | Non-Uniform Rational B-Splines | Mathematical model for generating smooth curves and surfaces. | Used in CAD and 3D modeling software. |
| N090 | NV | Non-Volatile | Memory that retains stored data after power off. | Used in EEPROM and flash memory. |
| N091 | NVD | National Vulnerability Database | U.S. government repository for software vulnerabilities. | Used for cybersecurity reference. |
| N092 | NVIC | Nested Vectored Interrupt Controller | ARM microcontroller component managing interrupt priorities. | Used in embedded firmware systems. |
| N093 | NVM | Non-Volatile Memory | Memory retaining data without power. | Used in SSDs and IoT devices. |
| N094 | NVQ | National Vocational Qualification | Work-based certification system. | Used in technical training and apprenticeships. |
| N095 | NWDAF | Network Data Analytics Function | 5G core function analyzing network behavior. | Used by telecom operators for optimization. |
| N096 | NWS | National Weather Service | U.S. federal agency monitoring weather and climate. | Provides forecasts and storm warnings. |
| N097 | NXDN | Next Generation Digital Narrowband | Digital radio protocol for professional communication. | Used in public safety and industrial radio networks. |
| N098 | NXP | Next eXPerience Semiconductors | Global semiconductor manufacturer. | Produces automotive and IoT chips. |
| N099 | N2O | Nitrous Oxide | Colorless gas used as anesthetic and in engines. | Used in racing for performance boost. |
| N100 | N2N | Node-to-Node | Peer-to-peer network communication model. | Used in decentralized networking systems. |
| N101 | NAAQS | National Ambient Air Quality Standards | Standards regulating air pollutant concentrations. | Used by EPA to control emissions. |
| N102 | NAB | National Association of Broadcasters | U.S. trade association for radio and TV broadcasters. | Organizes broadcasting conventions and standards. |
| N103 | NAFTA | North American Free Trade Agreement | Trade pact between U.S., Canada, and Mexico. | Replaced by USMCA in 2020. |
| N104 | NAM | Network Access Module | Component allowing network connectivity for devices. | Used in industrial automation. |
| N105 | NAND Flash | Negative AND Flash Memory | Non-volatile memory for data storage. | Used in USB drives and SSDs. |
| N106 | NASDAQ | National Association of Securities Dealers Automated Quotations | American stock exchange specializing in tech stocks. | Houses Apple, Microsoft, and Amazon stocks. |
| N107 | NASA | National Aeronautics and Space Administration | U.S. agency responsible for space research and exploration. | Conducts Mars rover missions. |
| N108 | NATM | New Austrian Tunneling Method | Construction method for tunnel excavation. | Used in civil engineering projects. |
| N109 | NBFC | Non-Banking Financial Company | Financial institution providing loans without a banking license. | Used in Indian finance industry. |
| N110 | NBIC | National Board Inspection Code | Standard for pressure vessel inspection and repair. | Used in mechanical engineering compliance. |
| N111 | NBMA | Non-Broadcast Multiple Access | Network type without inherent broadcast capability. | Used in frame relay and ATM networks. |
| N112 | NBR | Nitrile Butadiene Rubber | Synthetic rubber resistant to oil and fuel. | Used in gloves and seals. |
| N113 | NBS | National Bureau of Standards | Former name of NIST (U.S. standards organization). | Ensured consistency in measurements. |
| N114 | NCIS | Naval Criminal Investigative Service | U.S. law enforcement agency for naval affairs. | Handles military and national security investigations. |
| N115 | NCL | Numerical Control Language | Programming language for controlling CNC machines. | Used in automated machining operations. |
| N116 | NCP | Network Control Protocol | Protocol managing network layer parameters in PPP. | Used in internet dial-up systems. |
| N117 | NCSU | North Carolina State University | Public research university. | Known for engineering and technology programs. |
| N118 | NCUA | National Credit Union Administration | U.S. agency regulating credit unions. | Protects consumer savings. |
| N119 | NDA | Non-Disclosure Agreement | Legal contract protecting confidential information. | Used in business partnerships. |
| N120 | NDE | Non-Destructive Evaluation | Assessing material properties without damage. | Used in aerospace inspection. |
| N121 | NDL | Network Data Language | Query language for accessing distributed databases. | Used in older database management systems. |
| N122 | NDR | Net Data Rate | Actual data transfer rate excluding overhead. | Used in network speed analysis. |
| N123 | NDS | Network Directory Service | Provides centralized directory of users and devices. | Used in enterprise networks. |
| N124 | NEA | National Education Association | Professional organization for educators. | Promotes public education in the U.S. |
| N125 | NEB | New England Biolabs | Biotechnology company specializing in enzymes. | Used in DNA and RNA research. |
| N126 | NEC | National Electrical Code | U.S. standard for electrical wiring and safety. | Used in construction and electrical design. |
| N127 | NEF | Nikon Electronic Format | Raw image format used by Nikon cameras. | Used in professional photography. |
| N128 | NEPA | National Environmental Policy Act | U.S. environmental protection law. | Requires environmental assessments for federal projects. |
| N129 | NETBIOS | Network Basic Input Output System | API for communication on local networks. | Used in legacy Windows networks. |
| N130 | NFCU | Navy Federal Credit Union | U.S. financial institution serving military personnel. | Offers banking services to armed forces. |
| N131 | NGO | Non-Governmental Organization | Non-profit organization operating independently of government. | UNICEF and WWF are examples. |
| N132 | NHTSA | National Highway Traffic Safety Administration | U.S. agency ensuring road safety standards. | Oversees vehicle recalls and crash testing. |
| N133 | NIH | National Institutes of Health | U.S. agency for medical research. | Funds studies on diseases and public health. |
| N134 | NILM | Non-Intrusive Load Monitoring | Analyzing power usage to identify appliance activity. | Used in smart home energy systems. |
| N135 | NIS | Network Information Service | Centralized directory for UNIX systems. | Used for managing user credentials. |
| N136 | NITR | National Institute of Technology Rourkela | Indian public technical university. | Known for engineering programs. |
| N137 | NJT | New Jersey Transit | Public transportation corporation in New Jersey. | Manages trains and buses. |
| N138 | NLCS | National League Championship Series | Major League Baseball playoff series. | Determines the National League champion. |
| N139 | NLOS | Non-Line of Sight | Transmission without direct visibility between devices. | Used in radio and 5G communication. |
| N140 | NLTK | Natural Language Toolkit | Python library for language processing. | Used in NLP research and development. |
| N141 | NMAP | Network Mapper | Open-source tool for network discovery and security auditing. | Used by cybersecurity professionals. |
| N142 | NMEA | National Marine Electronics Association | Defines communication standards for marine devices. | Used in GPS systems on boats. |
| N143 | NMOS | N-type Metal-Oxide Semiconductor | Transistor type using n-channel carriers. | Used in CMOS technology. |
| N144 | NMR | Nuclear Magnetic Resonance | Technique for determining molecular structure. | Used in medical imaging (MRI). |
| N145 | NMSA | National Marine Sanctuaries Act | Protects U.S. marine environments. | Used in environmental conservation. |
| N146 | NOCS | Network-on-Chip System | On-chip communication between processor cores. | Used in multi-core processors. |
| N147 | NOP | No Operation | CPU instruction performing no function. | Used for timing adjustments in assembly code. |
| N148 | NOR | Not OR | Logic gate producing true only when all inputs are false. | Used in logic circuit design. |
| N149 | NORAD | North American Aerospace Defense Command | Joint U.S.-Canadian defense organization. | Monitors aerospace threats. |
| N150 | NOS | New Old Stock | Unused item from past production. | Used in vintage electronics and cars. |
| N151 | NPIV | N_Port ID Virtualization | Fibre Channel feature for sharing ports among devices. | Used in SAN environments. |
| N152 | NPL | National Physical Laboratory | U.K. measurement standards laboratory. | Develops atomic time standards. |
| N153 | NPR | National Public Radio | American non-profit media organization. | Broadcasts news and cultural programs. |
| N154 | NPV | Net Present Value | Evaluates profitability of an investment. | Used in financial analysis. |
| N155 | NRU | Not Recently Used | Page replacement algorithm in memory management. | Used in operating systems. |
| N156 | NSD | Name Server Daemon | Provides DNS name resolution services. | Used in UNIX and Linux systems. |
| N157 | NSN | National Stock Number | Identifies items in federal supply systems. | Used by military logistics. |
| N158 | NSS | Network Security Services | Cryptographic library suite for security functions. | Used in Firefox browser. |
| N159 | NSTP | National Service Training Program | Philippine civic education initiative. | Used in community engagement programs. |
| N160 | NT | New Technology | Microsoft’s 32-bit Windows operating system architecture. | Basis for Windows NT, 2000, XP, and 10. |
| N161 | NTCIP | National Transportation Communications for ITS Protocol | Communication standard for traffic control. | Used in smart transportation systems. |
| N162 | NTLDR | NT Loader | Boot loader for older Windows systems. | Used in Windows XP startup process. |
| N163 | NTP | Network Time Protocol | Synchronizes clocks across computer systems. | Used in servers and routers. |
| N164 | NTSC-M | NTSC Modified | Television broadcasting format variant. | Used in North American analog TV. |
| N165 | NTSB | National Transportation Safety Board | U.S. agency investigating transportation accidents. | Oversees aviation and rail safety. |
| N166 | NTT | Nippon Telegraph and Telephone | Japanese telecommunications company. | Provides fiber and mobile networks. |
| N167 | NTU | Nephelometric Turbidity Unit | Unit measuring water turbidity. | Used in water quality testing. |
| N168 | NUMMI | New United Motor Manufacturing, Inc. | Former Toyota-GM joint car manufacturing plant. | Located in Fremont, California. |
| N169 | NV | Net Volume | Measurement of usable product or fluid. | Used in packaging and oil production. |
| N170 | NVIS | Near Vertical Incidence Skywave | Radio propagation technique for close HF communication. | Used by military and emergency services. |
| N171 | NVRAM | Non-Volatile Random-Access Memory | Memory that retains data after power loss. | Used in BIOS and routers. |
| N172 | NVT | Network Virtual Terminal | Interface standardizing remote communication. | Used in Telnet protocol. |
| N173 | NWA | Network Working Agreement | Agreement defining communication protocols. | Used in enterprise networking. |
| N174 | NWDA | National Water Development Agency | Indian agency managing water resources. | Implements interlinking river projects. |
| N175 | NWK | Network Layer | OSI layer responsible for routing data packets. | Used in IP networking. |
| N176 | NWU | Northwestern University | American private research university. | Known for technology and journalism programs. |
| N177 | NXP | Next eXPerience | Semiconductor manufacturing brand. | Produces embedded processors. |
| N178 | NYSE | New York Stock Exchange | World’s largest securities exchange. | Trades major global companies. |
| N179 | NOCN | National Open College Network | U.K. awarding organization for qualifications. | Used in vocational education. |
| N180 | NVR | Network Video Recorder | Records IP camera feeds over a network. | Used in surveillance systems. |
| N181 | NWA | Northwest Airlines | Former major U.S. airline merged with Delta. | Operated trans-Pacific routes. |
| N182 | NTRU | Number Theory Research Unit | Cryptographic algorithm based on lattice problems. | Used in post-quantum cryptography. |
| N183 | NWM | Network Water Model | Simulation model for water distribution systems. | Used in civil and hydraulic engineering. |
| N184 | NWSA | National Wireless Safety Alliance | U.S. safety certification organization for tower workers. | Provides telecom safety training. |
| N185 | NXP | Nexperia Semiconductors | Manufacturer of automotive and industrial chips. | Supplies logic ICs and diodes. |
| N186 | NYPD | New York Police Department | Law enforcement agency in New York City. | Largest municipal police force in the U.S. |
| N187 | NYU | New York University | Private research university. | Known for business, arts, and tech programs. |
| N188 | NIST-CSF | NIST Cybersecurity Framework | Guidelines for managing cybersecurity risks. | Used in U.S. federal agencies. |
| N189 | NOAA | National Oceanic and Atmospheric Administration | U.S. agency monitoring oceanic and atmospheric conditions. | Provides climate forecasts. |
| N190 | NOC | Network Operations Center | Facility for network monitoring and maintenance. | Used by telecom operators. |
| N191 | NTPv4 | Network Time Protocol version 4 | Latest version of clock synchronization protocol. | Used in modern IT infrastructure. |
| N192 | NVA | Net Value Added | Economic measure of productivity improvement. | Used in national income accounting. |
| N193 | NVE | Network Virtualization Edge | Provides virtualization at the edge of networks. | Used in data center design. |
| N194 | NVLink | NVIDIA Link | High-speed interconnect for GPUs. | Used in AI and HPC servers. |
| N195 | NVRM | NVIDIA Resource Manager | Software layer for managing GPU operations. | Used in CUDA development. |
| N196 | NWC | Net Working Capital | Financial metric showing liquidity status. | Used in business accounting. |
| N197 | NWN | Neverwinter Nights | Role-playing video game by BioWare. | Used in gaming and AI simulation. |
| N198 | NXP | Nexperia Processor | Processor brand for automotive systems. | Used in vehicle ECUs. |
| N199 | NYMEX | New York Mercantile Exchange | Commodity futures exchange. | Trades oil, gold, and metals futures. |
| N200 | NYT | The New York Times | Major American newspaper publisher. | Provides global digital news coverage. |