| ndpa | Hamamatsu NanoZoomer Annotation Data |
| ndpr | Hamamatsu NanoZoomer Digital Pathology Image Format Data |
| ndpvs | Hamamatsu NanoZoomer Script |
| ndr | Nikon Capture Image Dust Off File |
| nds | Nintendo DS ROM Image |
| ndt | NEPLAN External Program Data |
| ndt | Niton Data Transfer File |
| ndu | SymbianOS Backup Data |
| ndv | Nanodrop Spectrophotometer Report |
| ndv | SmartWare Network Driver |
| ndx | Aston-Tate dBASE Database Index |
| ndx | Concordance Numeric Data and Text Fields Data |
| ndx | Neat 5 Exported Archive |
| nearest | PLINK Nearest Neighbor Distance Report Data |
| neb | Nord Electro 3 Factory Backup |
| nec | NEC Antenna Data |
| ned | Navicat for MySQL ER Diagram Data |
| nef | Nero BackItUp Encryption File |
| nei | LonWorks Neuron EPROM Image File |
| nen | Nick-O-Matic Design Factory Data |
| neon | NEON Encoded Data |
| nepg | Nord Electro 3 Program |
| neroserial | Nero Multimedia Suite License Key |
| neroserial11 | Nero Multimedia Suite License Key |
| neroserial12 | Nero Multimedia Suite License Key |
| nes | NES ROM Image |
| nessus | Nessus Network Security Scanner |
| net | Cadence OrCAD Netlist Output Data |
| net | CIRCAD Netlist Data |
| net | Dynagen Network Topology Data |
