| Acronym | Definition |
|---|
| CIEF | Capillary Isoelectric Focusing |
| CIEF | Conseil International d'Études Francophones (Council of International Francophone Studies; Lafayette, LA) |
| CIEF | Computational Intelligence in Economics and Finance (conference) |
| CIEF | Commander's in Extremis Force (US Army) |
| CIEF | Construction Industry Environmental Forum (Construction Industry Research and Information Association) |
| CIEF | Consortium for Improvement in Erectile Function |
| CIEF | Capabilities Integration Enterprise Forum (US Army) |
| CIEF | Carrier Independent Exchange Facility |