| Abbreviation | Definition |
|---|---|
| WTCD | World Toy Camera Day |
| WTCQ | World T'ai Chi & QiGong Day |
| WTD | World Teachers' Day |
| WTF | Wednesday Thursday Friday |
| WTF | Wednesday, Thursday and Friday |
| WTF | Wednesday, Thursday, Friday |
| WTHF | Wednesday, Thursday, Friday |
| WTID | World TELECOM Internet Day |
| WTISD | World Telecommunication and Information Society Day |
| WTPD | World Town Planning Day |
| WVD | Wisconsin Vets Day |
| WWAV | Working Women's Awareness Week |
| WWD | World Water Day |
| WWJD | World Wide Joy Day |
| WWPPD | World Wide Pinhole Photography Day |
| WYD | World Youth Day |
| WYPO | Whopped Your P*ssy Out |
| WYR | number Week of the Year |
| WZAW | Work Zone Awareness Week |
| WZSAW | Work Zone Safety Awareness Week |