| Acronym | Definition |
|---|
| EFCN➣Elder Friendly Community Network (Canada) |
| EFCN➣Evangelical Free Church of Naperville (Naperville, IL) |
| EFCN➣Explicit Forward Congestion Notification (Internet traffic) |
| EFCN➣Environmental Finance Center Network (US EPA) |
| EFCN➣Escondido First Church of the Nazarene (Escondido, CA) |
| EFCN➣Étude et Fabrication à Commande Numérique (Tunisian manufacturing company) |
| EFCN➣Engelse Ford Club Nederland (Dutch: English Ford Club Netherlands; est. 1985; Netherlands) |
| EFCN➣European Forum of Cultural Networks |
| EFCN➣Efficiency of Power Generation for Commercial Use with Nuclear |