| Abbreviation | Definition |
|---|---|
| WTNF | When The Night Falls |
| WTO | World Tyrant's Oligarchy |
| WUAC | Wierdos Unite And Conquer |
| WVC | Wellington Van Cow |
| WW | Wakko Warner |
| WWFF | World's Worst Fan Fiction |
| WWOHP | Wizarding World Of Harry Potter |
| WWR | Werewolf Registry |
| WWUU | World Wide Undead Union |
| WWW | Walking Women Warriors |
| WZGF | Wing ZERO's Gundam Federation |
| XA | Xtreem Anarchy |
| XCL | XCC Community Ladder |
| XDF | Xtreme Dutch Force |
| XE | XMP Elites |
| XF | Xkalibur's Fate |
| XFG | X-Files Guild |
| XGG | Xander Guardian Guild |
| XI | Xenobiological Initiative |
| XIP | Xtreme Influential Power |