| Acronym | Definition |
|---|
| WU | Western Union |
| WU | Windows Update (Microsoft) |
| WU | Washington University |
| WU | Uruguay (airline Tax Code) |
| WU | Washburn University (since 1865; Topeka, Kansas) |
| WU | Work Unit |
| WU | What's Up? |
| WU | Willamette University (Salem, Oregon) |
| WU | Weekend Update (Saturday Night Live) |
| WU | Winter Universiades (sporting event) |
| WU | Whole Universe |
| WU | Winthrop University |
| WU | Wood Unit (pulmonary care) |
| WU | Walden University (Minneapolis, MN) |
| WU | Wilkes University (Wilkes Barre, PA) |
| WU | Women's Union |
| WU | Wisconsin Union |
| WU | Weather Unit |
| WU | Whittle Unit (early jet engine, circa 1937) |
| WU | Worms United (game) |
| WU | Wirtschaftsuniversität(-wien) University of Economics (Vienna, Austria) |
| WU | Uncorrected sweep width |
| WU | Wabash University (Indiana) |
| WU | Whitetails Unlimited, Inc (Sturgeon Bay, Wisconsin conservation orgainzation) |
| WU | Weapons & Utilities Maintenance |