| Abbreviation | Definition |
|---|---|
| WLL | MicroSoft Word Add-in |
| WMA | Windows Media Audio |
| WMC | MathCad Backup of startup files |
| WMC | WordMARC Text file |
| WMC | WordPerfect for Windows Macro file |
| WMF | Windows Media Format |
| WMF | Windows MetaFile format - Vector graphics |
| WML | WAP Wireless Markup Language document |
| WMP | Windows Magic Icon Palette Graphics |
| WMV | Windows Media Video file |
| WMZ | Default extension for a zipped Windows Media Player file |
| WN | NeXT WriteNow Text document |
| WNF | CorelDraw Native format Outline font description |
| WOA | Windows 3.x Swap file |
| WOB | RIO Designer Pro Object file |
| WOC | Windows OrgChart Organization file |
| WOR | MapInfo Workspace |
| WOW | Grave Mod Player 8 channel Music |
| WP | WordPerfect Text document |
| WP4 | WordPerfect 4.x text document |