| Acronym | Definition |
|---|
| WEF | Water Environment Federation |
| WEF | World Economic Forum |
| WEF | Winter Equestrian Festival (Wellington, FL) |
| WEF | Web Embedding Fonts |
| WEF | Wireless Enterprise Framework |
| WEF | Wsdm Event Format |
| WEF | Waste-to-Energy Facility (various locations) |
| WEF | With Effect From (aviation) |
| WEF | World Evangelical Fellowship |
| WEF | World Education Fellowship (Australia) |
| WEF | World Express Freight (various locations) |
| WEF | World Environment Fund |
| WEF | Web EFuture (Web Solutions; India) |
| WEF | Weight Enumerating Function |
| WEF | With Effective From |
| WEF | Wrestling Entertainment Federation |
| WEF | World Economic Fund |
| WEF | World Education Fund (est. 2006) |