| Acronym | Definition |
|---|
| EFAB | Économie, Finance, Assurance, Banque (French: Economics, Finance, Insurance, Banking) |
| EFAB | École Française de l'Administration de Biens (French: French School of Property Management) |
| EFAB | Environmental Financial Advisory Board (US EPA) |
| EFAB | Education Funding Advisory Board (Illinois) |
| EFAB | Electrochemical Fabrication (micro-device manufacturing technology) |
| EFAB | Établissement de Fabrication d'Armement de Bourges (French: Armament Manufacturing Establishment of Bourges; Bourges, France) |
| EFAB | Electrochemically Assisted Fast Atom Bombardment |
| EFAB | Extended Forward Avionics Bay (aviation) |
| EFAB | Economic and Financial Analysis Branch (MMS Canada) |