List of Data File Formats Starting with the Letter "N"
| .na2 | Netscape Mail file |
| .nam | MS Office Name file |
| .nap | Naplps file (VideoShow) (EnerGraphics) |
| .nav | MSN Application Extension |
| .nb | Text file (Nota Bene) |
| .nbf | Backup Now Backup file |
| .nbu | Nokia PC Suite Backup file |
| .nc | Graphics (netcdf) |
| Instructions for NC (Numerical Control) machine (CAMS) | |
| .ncb | MS Developer Studio file |
| .ncc | Cnc (Computer Numeric Control) control file (CamView 3D) |
| .ncd | Nero CoverDesigner Document file |
| Norton Change Directory support file (Norton Commander) | |
| NTI CD-Maker file | |
| .ncf | Lotus Notes Internal Clipboard |
| Steam Configuration file | |
| Netware Command file | |
| .nch | Outlook Express folder file |
| On Hold message/music file | |
| .nd5 | NDS Renamed file |
| .ndb | Network database (Intellicom - Compex) |
| .nde | Video format - various manufactures of surveillance camera systems |
| .ndf | NeoPlanet Browser File |
| .ndk | Lotus Notes(containing the files related to workspace) |
| .ndx | Index file (dBASE II - III - IV - dBFast) |
| .neb | Nortec H.E.L.P. |
| .ned | MSN Application Extension |
| .nef | Nikon's RAW format for digital cameras (Nikon Electronic Format) |
| .neo | Raster graphics (Atari Neochrome) |
| .nes | Nintendo Entertainment System ROM Image |
| .net | Network configuration/info file |
| .new | New info |
| .nfo | Info file |
| .ng | Online documentation database (Norton Guide) |
| .ngf | Enterasys Networks NetSight generated format file |
| .ngg | Nokia Group Graphics |
| .nh | NetHack file |
| .nib | Adobe AIR file |
| .nif | NetImmerse File Format |
| .njb | Photo Index file |
| .nlm | Netware Loadable Module |
| .nls | Code Page National Language Support |
| .nlx | Form (FormWorx 3.0) |
| .nmd | SwordSearcher file |
| .nmi | SwordSearcher file |
| .nmo | Virtools Behavioral Objects |
| .nms | Numega Softice's Loader file |
| Virtools Graphical Scripts | |
| .nnb | newnovelist Story Outline |
| .nob | VersaPro Word Exchange file |
| .nol | Nokia Operator Logo |
| .not | Acrobat Spelling file |
| ActiveNote Post-It-Notes | |
| .now | Text file |
| .np | Project schedule (Nokia Planner) (Visual Planner 3.x) |
| .npa | ReliaSoft Weibull++ 6 |
| .npf | Backup Now Image file |
| .npi | Source for DGEN.EXE intepreter (dBASE Application Generator) |
| .nra | Nero Audio-CD Compilation |
| .nrb | Nero CD-ROM Boot Compilation |
| .nrg | Norton Registration Entries |
| Nero CD-Image | |
| IsoBuster file | |
| NRG File Format | |
| .nri | Nero ISO CD-ROM compilation |
| .nrl | iManage file |
| .nrw | Nero WMA Compilation file |
| Nikon RAW file | |
| .nsc | Noder file (Polish) |
| Windows Media Station file | |
| .nsf | Lotus Notes / Domino database |
| .nsi | Nullsoft Install System Script |
| .nst | Music (NoiseTracker) |
| .nt | Startup files (Windows NT) |
| .ntf | Lotus Notes / Domino template file |
| .nth | Nokia Theme file |
| .ntp | Neato CD Labels |
| .ntr | Executable ASCII text file (strip header and rename) (netrun31.zip) |
| .nts | Tutorial (Norton) |
| Executable ASCII text file (strip header and rename) (netsend1.zip) | |
| .ntx | Index (Clipper 5) |
| .ntz | InVircible Directory Integrity Information |
| .nu4 | Norton Utilities Root File (DLL) Symantec Corporation |
| .nuf | Message for new users on their 1st call (Procomm Plus) |
| .numbers | iWork Numbers Spreadsheet file |
| .nup | Program Component Update files |
| .nvc | Nero Vision Project file |
| .nvm | AOLpress Help file |
| .nwc | Noteworthy Composer song file |
| .nws | Info text file (latest news) (ASCII) |
| .nwr | New World Report Aegis/MSP Law Enforcement Records (New World Systems) |
| .nwt | New World Text Aegis/MSP Law Enforcement Records (New World Systems) |
| .nxt | Sound (NeXT format) |
| .nzb | NewsBin Index file |
