| vst | Microsoft Visio Template |
| vstm | Microsoft Visio 2013 macro-enabled Template |
| vstx | Microsoft Visio 2013 Template |
| vsw | Microsoft Visio Workspace |
| vsx | Microsoft Visio Stencil XML |
| vthought | Visual Thought Diagram |
| vtm | VirtualTourist Markup Language Document |
| vtml | VirtualTourist Markup Language Document |
| vtx | Microsoft Visio Template XML |
| vvn | Vivien Drawing Document |
| vw | Volkswriter Text Document |
| vw3 | Volkswriter 3 Text Document |
| vwi | Microsoft SharePoint Workflow Diagram |
| vwx | VectorWorks 2008 Document |
| vxc | VoxCAD Document |
| vxml | VoiceXML Document |
| vxs | VX Show-n-Tell Slideshow |
| vyd | VyperHelp Help Data |
| w50 | Corel WordPerfect Document |
| w51 | Corel WordPerfect Document |
| w60 | Corel WordPerfect Document |
| w61 | Corel WordPerfect Document |
| wb1 | Quattro Pro for Windows Spreadsheet |
| wb2 | Quattro Pro for Windows Spreadsheet |
| wb3 | Quattro Pro for Windows Spreadsheet |
| wbk | Microsoft Word Backup |
| wbxml | WAP Binary XML |
| wcd | WaterCAD Document |
| wch | GEM Word Chart Document |
| wch | Corel WordPerfect Macro Facility |
| wcm | Corel WordPerfect Macro |
| wcml | WebComposition Markup Language Document |
| wd0 | WordExpress Document |
| wd2 | Word Express v2 Document |
| wdb | Microsoft Works Database |