| .W32 | Microsoft Corporation | Arquivos de vídeo | Win32 Makefile | GNU Make | GNU Operating System |
| .W3D | Adobe Systems Incorporated | Arquivos de vídeo | Adobe Shockwave 3D File | Adobe Director | Adobe Systems Incorporated |
| .WA0 | Magix Software GmbH | Arquivos de vídeo | Magix File | MAGIX Photostory 2016 Deluxe | Magix Software GmbH |
| .WA1 | Magix Software GmbH | Arquivos de vídeo | Magix File | MAGIX Photostory 2016 Deluxe | Magix Software GmbH |
| .WCO | infoStrider | Arquivos de vídeo | WinCam 2000 Distributable Movie | WinCam 2000 | infoStrider |
| .WCP | Corel | Arquivos de vídeo | WinDVD Creator Project File | Corel WinDVD | Corel |
| .WEBM | Google | Arquivos de vídeo | WebM Video File | Internet Explorer | Microsoft Corporation |
| .WFSP | Wondershare Software Co., Ltd. | Arquivos de vídeo | Wondershare Fantashow Project | Fantashow | Wondershare Software Co., Ltd. |
| .WLMP | Microsoft Corporation | Arquivos de vídeo | Microsoft Windows Live Movie Maker Video Project | Microsoft Windows Live Movie Maker | Microsoft Corporation |
| .WM | Microsoft Corporation | Arquivos de vídeo | Windows Media File | Microsoft Windows Media Player | Microsoft Corporation |
| .WM3 | MSC Software | Arquivos de vídeo | VisualNastran Movie File | MSC Nastran | MSC Software |
| .WMD | Microsoft Corporation | Arquivos de vídeo | Windows Media Download Package | Microsoft Windows Media Player | Microsoft Corporation |
| .WMV | Microsoft Corporation | Arquivos de vídeo | Windows Media Video File | CyberLink PowerDVD | CyberLink |
| .WP3 | Microsoft Corporation | Arquivos de vídeo | Microsoft Photo Story Project File | Photo Story | Microsoft Corporation |
| .WPL | Microsoft Corporation | Arquivos de vídeo | Windows Media Player Playlist | Microsoft Windows Media Player | Microsoft Corporation |
| .WSA | Sonicle | Arquivos de vídeo | WebSynth Media File | WebSynth | Sonicle |
| .WSV | Konica Minolta | Arquivos de vídeo | Konica Minolta SpectraMagic Data | SpectraMagic NX | Konica Minolta |
| .WTV | Microsoft Corporation | Arquivos de vídeo | Windows Recorded TV Show File | CyberLink PowerDVD | CyberLink |
| .WVE | Wondershare Software Co., Ltd. | Arquivos de vídeo | Wondershare Filmora Project File | Wondershare Filmora | Wondershare Software Co., Ltd. |
| .WVH | Canon Inc. | Arquivos de vídeo | WebView Livescope Viewer Video | WebView Livescope | Canon Inc. |
| .WVM | Google | Arquivos de vídeo | Google Play Video File | Google Play Movies | Google |
| .WVX | Microsoft Corporation | Arquivos de vídeo | Windows Media Video Redirector | Microsoft Windows Media Player | Microsoft Corporation |
| .WXP | Open Source | Arquivos de vídeo | Wax 2.0 Project | DebugMode Wax | Open Source |
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