EFW may refer to:
- Economic Freedom of the World
- Energy-from-waste, see Waste-to-energy
- Jefferson Municipal Airport, which has IATA airport code EFW
- Electric Field and Wave experiment, a scientific instrument on the Cluster space mission
- Eidgenössische Flugzeugwerke Emmen, the Swiss Federal Aircraft Factory
|This disambiguation page lists articles associated with the title EFW.
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