| nal | ZENworks Network Delivered Application Shortcut |
| nam | Aqua3D Network Data |
| nam | DB-MAIN Reserved Names Data |
| nam | DMAP Names Dictionary Data |
| nam | MODFLOW Name Dataset |
| nan | NanoScope Software Data |
| nanokey_data | Korg Kontrol Editor Nanokey Data |
| nanopad2_set | Korg Kontrol Editor Nanopad2 Set |
| nanopad_data | Korg Kontrol Editor Nanopad Data |
| nanopad_glob | Korg Kontrol Editor Nanopad Global Data |
| nanopad_set | Korg Kontrol Editor Nanopad Set |
| nanr | Nitro Animation Resource |
| nap | NAPLPS Metafile |
| napj | Navicat Premium Batch Job Data |
| nar | EMC NaviSphere Analyzer Archive |
| nas | Nastran Input File |
| nasb | theWord New American Standard Bible Module |
| natvis | Visual Studio Natvis Framework Data |
| nav | CART Grove Data |
| nav | CART Navigator Data |
| nav2 | WinAVI DVD Copy Temporary Data |
| navrep | Catia NavRep Data |
| nax | Moxy Portfolio Information Data |
| nb | Corel WordPerfect Notebook |
| nb3 | Navicat for MySQL Backup Data |
| nb7 | NovaBACKUP v8 Backup Data |
| nba | Nota Bene Configuration Information |
| nbak | Neat Database Backup |
| nbattrs | NetBeans Project Attributes Data |
| nbd | NovaBACKUP Data File |
