| Acronym | Definition |
|---|
| CEF | CAN (Controller Area Network) Extended Frame |
| CEF | Caixa Economica Federal (Brazil) |
| CEF | Cisco Express Forwarding |
| CEF | Closed End Fund |
| CEF | Common European Framework |
| CEF | Continuing Education Fund |
| CEF | Carbon Emission Factor |
| CEF | Canadian Expeditionary Force (WWI) |
| CEF | Centre pour les Etudes en France (French: Study in France Centre) |
| CEF | Creative Education Foundation |
| CEF | Citizenship Education Fund |
| CEF | Community Empowerment Fund |
| CEF | Committee for Education Funding |
| CEF | Chicken Embryo Fibroblasts |
| CEF | Canadian Equestrian Federation |
| CEF | Child Evangelism Fellowship, Inc. (Christian missions organization) |
| CEF | Common Executable Format (Microsoft) |
| CEF | Cable Entrance Facility |
| CEF | Comite Electrotechnique Francais |
| CEF | Consolidated Exchange Feed |
| CEF | Cost Estimating Format (US FEMA) |
| CEF | Colorado Energy Forum |
| CEF | Civil Engineer Flight (AFSPC) |
| CEF | Civil Engineering Faculty |
| CEF | China Expeditionary Force |
| CEF | Westover Air Force Base (airport code, Chicopee Field) |
| CEF | Collection Efficiency Function (microscope) |
| CEF | Community Energy Fund |
| CEF | Civil Engineering Flight |
| CEF | Critical Experiments Facility |
| CEF | Computing with Encrypted Function |
| CEF | Collin Equality Foundation (Collin County Gay and Lesbian Alliance; Texas) |
| CEF | Channel Estimation Filter |
| CEF | Civil Engineering File |
| CEF | Common Exchange Format |
| CEF | Conventional and Experimental Facilities |
| CEF | Common Equipment Facility |
| CEF | Customer Equipment Form |
| CEF | Controlled Exposure Facility |
| CEF | Cluster Enhanced Filter |
| CEF | Career Executive Force |
| CEF | Centralized Environmental Facility |
| CEF | Capabilities Exposure Function (Sprint) |
| CEF | Comanche Era Fleet |
| CEF | Character Encoding Framework |
| CEF | Content Encryption Function |