| NAP | Network Access Point | - | Human Genome |
| NAS | Network-Attached Storage | - | Human Genome |
| NAT | Network Address Translation | - | Human Genome |
| NCSA | National Center For Supercomputing Applications | - | Human Genome |
| NDIS | Network Driver Interface Specification | - | Human Genome |
| NDMP | Network Data Management Protocol | - | Human Genome |
| NDS | Novell Directory Services | - | Human Genome |
| NETBEUI | Network BIOS Extended User Interface | - | Human Genome |
| NETBIOS | Network Basic Input Output System | - | Human Genome |
| NFS | Network File System | - | Human Genome |
| NGI | Next Generation Internet | - | Human Genome |
| NIC | Network Interface Card | - | Human Genome |
| NIMH | Nickel Metal Hydride | - | Human Genome |
| NNTP | Network News Transfer Protocol | - | Human Genome |
| NOP | No Operation | - | Human Genome |
| NOS | Network Operating System | - | Human Genome |
| NSAPI | Netscape Server API | - | Human Genome |
| NSF | National Science Foundation | - | Human Genome |
| NSFNET | National Science Foundation Network | - | Human Genome |
| NSP | Network Service Provider | - | Human Genome |
| NTFS | NT File System | - | Human Genome |
| NTSC | National Television Standards Committee | - | Human Genome |
| NUMA | Non-Uniform Memory Access | - | Human Genome |
| NURBS | Non-Uniform Rational B-Spline | - | Human Genome |
| NVRAM | Non-Volatile RAM | - | Human Genome |
| NAAR | next available agent routing
| - | Human Genome |
| NACSZ | name, address, city, state, zip code
| - | Human Genome |
| NAICS | North American Industry Classification System
| - | Human Genome |
| NANP | North American Numbering Plan
| - | Human Genome |
| NANPA | North America Numbering Plan Administration
| - | Human Genome |
| NASA | National Aeronautics and Space Administration
| - | Human Genome |
| NBIP-VPNS | Network-Based Internet Protocol Virtual Private Network Service
| - | Human Genome |
| NCAS | non-call associated signaling
| - | Human Genome |
| NCP | network control point
| - | Human Genome |
| NCS | National Communications System
| - | Human Genome |
| NDC | National Data Center
| - | Human Genome |
| NDO | Network Duty Officer
| - | Human Genome |
| NDR | Network Disaster Recovery
| - | Human Genome |
| NE | network element
| - | Human Genome |
| NEBS | Network Equipment Building Systems
| - | Human Genome |
| NEC | Nippon Electric Company
| - | Human Genome |
| NECA | National Exchange Carrier Association
| - | Human Genome |
| NESV | network edge switch vehicle
| - | Human Genome |
| NetDB | network debugger
| - | Human Genome |
| NFM | network fault management
| - | Human Genome |
| NFPA | National Fire Protection Association
| - | Human Genome |
| NG | next generation
| - | Human Genome |
| NGBE | network gateway border element
| - | Human Genome |
| NGN | next generation network
| - | Human Genome |
| NIACAP | National Information Assurance Certification and Accreditation Process
| - | Human Genome |
| NID | network intrusion detection
| - | Human Genome |
| NIDR | network information discovery and retrieval
| - | Human Genome |
| NIDS | Network Integration & Deployment Services
| - | Human Genome |
| NII | national information infrastructure
| - | Human Genome |
| NISCAP | National Information Security Certification and Accreditation Process
| - | Human Genome |
| NISPOM | National Industrial Security Program Operating Manual
| - | Human Genome |
| NIST | National Institute of Standards and Technology
| - | Human Genome |
| NIU | Network Interface Unit
| - | Human Genome |
| NIUF | National ISDN Users Forum
| - | Human Genome |
| NLDS | Network Layer Data Service
| - | Human Genome |
| NLSP | netware link services protocol
| - | Human Genome |
| NM | network management
| - | Human Genome |
| NMC | Network Management Center
| - | Human Genome |
| NMLI | native mode local area network interconnection
| - | Human Genome |
| NMM | network monitoring and management
| - | Human Genome |
| NMS | network management server
| - | Human Genome |
| NNI | network-network interface
| - | Human Genome |
| NPA | Numbering Plan Area
| - | Human Genome |
| NPM | National Project Management
| - | Human Genome |
| NPP | Natural Presenter Package
| - | Human Genome |
| NPR | National Performance Review
| - | Human Genome |
| NPV | net present value
| - | Human Genome |
| NRA | network remote access
| - | Human Genome |
| NRC | non-recurring charge
| - | Human Genome |
| NRE | network routing engine
| - | Human Genome |
| NRIC | National Reliability Industry Council
| - | Human Genome |
| NROC | Northern Regional Operations Center
| - | Human Genome |
| NS/EP | National Security/Emergency Preparedness
| - | Human Genome |
| NS/EPCC | National Security/Emergency Preparedness Control Center
| - | Human Genome |
| NSA | National Security Agency
| - | Human Genome |
| NSC | network services complex
| - | Human Genome |
| NSCM | Networx sales channel manager
| - | Human Genome |
| NSIE | network security information exchange
| - | Human Genome |
| NSIS | next steps in signaling
| - | Human Genome |
| NSS | Network Scanning Service
| - | Human Genome |
| NSTAC | National Security Telecommunications Advisory Committee
| - | Human Genome |
| NT | network termination
| - | Human Genome |
| NTIA | National Telecommunications and Information Administration
| - | Human Genome |
| NTMS | National Telecommunications Management Structure
| - | Human Genome |
| NTP | network time protocol
| - | Human Genome |
| NUI | network user identification
| - | Human Genome |
| NXX | office code where n=2-9 and x=0-9
| - | Human Genome |
| NZDF | non-zero dispersion fiber
| - | Human Genome |
| NZDS | non-zero dispersion shifted
| - | Human Genome |
