| vtr | ParaView VTK Rectilinear Grid |
| vtu | ParaView VTK Unstructured Grid |
| vtx | Valve Source Mesh Strip Data |
| vue | dBASE IV View File |
| vue | FoxPro 2 View |
| vvd | Valve Source Model Vertex Data |
| vvp | Icarus Verilog Compiled Program |
| vvt | VersaPro Variable View Table |
| vwf | Altera Quartus II Vector Waveform File |
| w | OpenEdge ABL Procedure File |
| w32 | Win32 Makefile |
| wadcfg | Microsoft Azure Diagnostics Configuration Data |
| wasm | WebAssembly Binary Code |
| wast | WebAssembly Textual Code |
| wat | WebAssembly Textual Code |
| wbo | DataFlex Web Business Object |
| wcp_settings | Alpha Five Web Project Settings |
| wct | Visual Basic WebClass HTML Template |
| wde | WinDev Report File |
| wdg | WinDev Procedures |
| wdi | WinDev Component Description |
| wdk | WinDev Component |
| wdm | WinDev WDINT Extraction File |
| wdo | WinDev Component List |
| wdt | WinDev Template File |
| wdw | WinDev Window File |
| wdy | WinDev Run-Time Template |
| webinfo | Visual Studio .NET Web Information Data |
| webtemplate | iWeb Template |
| webtheme | iWeb Theme Template |
| wet | WinSQL Export Template |
| wew | Debugging Tools for Windows Saved Workspace |
| wfo | Delphi Runimage File |
| wfs | Windows Script File |
| whl | Python Wheel Package |