| W | Winning 
| Others |
| W | Wisdom
| Others |
| W | Wise
| Others |
| W | Witch
| Others |
| W | With
| Others |
| W | Withdrew
| Others |
| W | Witness
| Others |
| W | Wolfram
| Others |
| W | Woman
| Others |
| W | Women
| Others |
| W | Womenblogs
| Others |
| W | Woodrow
| Others |
| W | Woody
| Others |
| W | Word chart file (APPLAUSE)
| Others |
| W | Words
| Others |
| W | Workfare
| Others |
| W | Workhorse
| Others |
| W | Working
| Others |
| W | Workprint
| Others |
| W | Worst
| Others |
| W | Wrestling
| Others |
| W | Write
| Others |
| W | Wrong
| Others |
| W | Wrongful
| Others |
| W | Wrongheaded
| Others |
| W | Wuss
| Others |
| w sup | water supply
| Others |
| W Tk | water tank
| Others |
| W to W | Wall-to-Wall carpeting
| Others |
| W VA CODE | West Virginia Code
| Others |
| W&B | Weight and Balance
| Others |
| W&B | Whippet & Buck
| Others |
| W&C | Wire and Cable
| Others |
| W&D | Wagon and Drag
| Others |
| W&D | Warm and Dry
| Others |
| W&DHVC | Wisbech and District Historic Vehicle Club
| Others |
| W&M | Web and Mobile
| Others |
| W&M | Wheelsandmore
| Others |
| W&P | Wood and Pickett
| Others |
| W&S | Waste & Scrap
| Others |
| W&S | Water and Sewer
| Others |
| W&T | Wheels and Tires
| Others |
| W&W | Wilhite and Wall ( WYCD-FM, Detroit)
| Others |
| W&WP | Wright & Wright Printers
| Others |
| W&WQTF | Waste and Water Quality Task Force
| Others |
| W-2 | US Internal Revenue Service form
| Others |
| W-9 | US Internal Revenue Service (IRS) tax form entitled "Request For Taxpayer Identification Number and Certification"
| Others |
| W-BIT | Wait Bit
| Others |
| W-CDMA | Wideband Code-Division Multiple-Access
| Others |
| W-Day | War Day; Declared by the President, Associated with an adversary decision to prepare for War
| Others |