| ubx | UBX GPS Log Data |
| uko | UKOOA P1/90 Data |
| ulf | Universal List File |
| upi | Sygic Drive POI Database |
| vct | Idrisi Vector Image |
| vdc | Idrisi Vector Documentation |
| vec | ENVI Vector Template |
| vec | Idrisi Vector |
| ver | SeeYou Airspace Data |
| vfk | Czech Cadastral Exchange Data Format Data |
| vmap | CompeGPS Vectorial Map |
| vpf | Vector Product Format Data |
| vrt | GDAL Virtual Format |
| vtpk | ArcGIS Pro Vector Tile Package |
| vtpx | ArcGIS Pro Vector Tile Package |
| vyk | GEPRO MISYS Data |
| wgom | CompeGPS Land Google Earth Remote Map Data |
| wkb | OpenGIS Well-known Binary File |
| wkt | OpenGIS Well-known Text File |
| wld | ArcGIS World Data |
| wmm | World Magnetic Model Data |
| wor | MapInfo Professional Workspace |
| wpz | Zander Flight Computer Waypoint File |
| wzm | Waze Map Data |
| xgo | Geoconcept GIS Add-on |
| xol | Swiss Map Overlay |
| xpl2 | TerraExplorer LOD Parameter Data |
| xtf | INTERLIS 2 Transfer Data |
| xyz | ArcGIS Desktop XYZ Format 3D Points Data |
| xyzi | ArcGIS Desktop XYZ with Intensity Data |
