| Extension | File Description |
| .NUMBERS | Spreadsheet Files |
| .NUMBERWHEE | Uncommon Files |
| .NUMBRWHEEL | Uncommon Files |
| .NUN | Uncommon Files |
| .NUO | Uncommon Files |
| .NUOVO | Uncommon Files |
| .NUP | Misc Files |
| .NUQ | Uncommon Files |
| .NUR | Uncommon Files |
| .NUS | Uncommon Files |
| .NUT | Uncommon Files |
| .NUU | Uncommon Files |
| .NUV | Video Files |
| .NUW | Uncommon Files |
| .NUWAGE | Uncommon Files |
| .NUX | Uncommon Files |
| .NUY | Uncommon Files |
| .NUZ | Uncommon Files |
| .NV | Database Files |
| .NV! | Uncommon Files |
| .NV0 | Uncommon Files |
| .NV1 | Uncommon Files |
| .NV2 | GIS Files |
| .NV3 | Uncommon Files |
| .NV4 | Uncommon Files |
| .NV5 | Uncommon Files |
| .NV6 | Uncommon Files |
| .NV7 | Uncommon Files |
| .NV8 | Uncommon Files |
| .NV9 | Uncommon Files |
| .NVA | Uncommon Files |
| .NVB | Uncommon Files |
| .NVC | Video Files |
| .NVD | Uncommon Files |
| .NVE | Uncommon Files |
| .NVF | Audio Files |
| .NVG | Uncommon Files |
| .NVH | Uncommon Files |
| .NVI | Uncommon Files |
| .NVJ | Uncommon Files |
| .NVK | Uncommon Files |
| .NVL | Data Files |
| .NVM | Uncommon Files |
| .NVN | Uncommon Files |
| .NVO | Uncommon Files |
| .NVP | Uncommon Files |
| .NVQ | Uncommon Files |
| .NVR | Uncommon Files |
| .NVS | Uncommon Files |
| .NVT | Uncommon Files |
| .NVU | Uncommon Files |
| .NVV | Uncommon Files |
| .NVW | Uncommon Files |
| .NVX | Uncommon Files |
| .NVX2 | Uncommon Files |
| .NVY | Uncommon Files |
| .NVZ | Uncommon Files |
| .NW | Uncommon Files |
| .NW0 | Uncommon Files |
| .NW1 | Uncommon Files |
| .NW2 | Uncommon Files |
| .NW3 | Uncommon Files |
| .NW4 | Uncommon Files |
| .NW5 | Uncommon Files |
| .NW6 | Uncommon Files |
| .NW7 | Uncommon Files |
| .NW8 | Uncommon Files |
| .NW9 | Uncommon Files |
| .NWA | Uncommon Files |
| .NWB | Uncommon Files |
| .NWC | CAD Files |
| .NWD | CAD Files |
| .NWE | Uncommon Files |
| .NWF | CAD Files |
| .NWG | Uncommon Files |
| Extension | File Description |
| .NWH | Uncommon Files |
| .NWI | Uncommon Files |
| .NWID | Uncommon Files |
| .NWJ | Uncommon Files |
| .NWK | Uncommon Files |
| .NWL | Uncommon Files |
| .NWM | Uncommon Files |
| .NWN | Uncommon Files |
| .NWO | Uncommon Files |
| .NWP | Data Files |
| .NWPD | Uncommon Files |
| .NWQ | Uncommon Files |
| .NWR | Uncommon Files |
| .NWS | Data Files |
| .NWT | Uncommon Files |
| .NWU | Uncommon Files |
| .NWV | Settings Files |
| .NWW | Uncommon Files |
| .NWX | Uncommon Files |
| .NWY | Uncommon Files |
| .NWZ | Uncommon Files |
| .NW_ | Uncommon Files |
| .NX0 | Uncommon Files |
| .NX1 | Uncommon Files |
| .NX2 | Uncommon Files |
| .NX3 | Uncommon Files |
| .NX4 | Uncommon Files |
| .NX5 | Uncommon Files |
| .NX6 | Uncommon Files |
| .NX7 | Uncommon Files |
| .NX8 | Uncommon Files |
| .NX9 | Uncommon Files |
| .NXA | Uncommon Files |
| .NXB | Uncommon Files |
| .NXC | Uncommon Files |
| .NXD | Uncommon Files |
| .NXE | Uncommon Files |
| .NXF | Uncommon Files |
| .NXG | Uncommon Files |
| .NXH | Uncommon Files |
| .NXI | Uncommon Files |
| .NXJ | Uncommon Files |
| .NXK | Uncommon Files |
| .NXL | Uncommon Files |
| .NXM | Uncommon Files |
| .NXN | Uncommon Files |
| .NXO | Uncommon Files |
| .NXP | Uncommon Files |
| .NXP2 | Uncommon Files |
| .NXQ | Uncommon Files |
| .NXR | Uncommon Files |
| .NXS | Uncommon Files |
| .NXT | Uncommon Files |
| .NXU | Uncommon Files |
| .NXV | Uncommon Files |
| .NXW | Uncommon Files |
| .NXX | Uncommon Files |
| .NXY | Uncommon Files |
| .NXZ | Uncommon Files |
| .NY | Plugin Files |
| .NY0 | Uncommon Files |
| .NY1 | Uncommon Files |
| .NY2 | Uncommon Files |
| .NY3 | Uncommon Files |
| .NY4 | Uncommon Files |
| .NY5 | Uncommon Files |
| .NY6 | Uncommon Files |
| .NY7 | Uncommon Files |
| .NY8 | Uncommon Files |
| .NY9 | Uncommon Files |
| .NYA | Uncommon Files |
| .NYB | Uncommon Files |
| .NYC | Uncommon Files |
| .NYD | Uncommon Files |
| .NYE | Uncommon Files |
