| Acronym | Definition |
|---|
| ECFS | Electronic Comment Filing System (US FCC) |
| ECFS | Electronic Comment Filing System |
| ECFS | European Cystic Fibrosis Society (Karup, Denmark) |
| ECFS | Early Childhood Family Services |
| ECFS | Early Childhood and Family Support |
| ECFS | East Caribbean Fibre System (telecommunications) |
| ECFS | European Centre for Follow-Up and Services (Belgium) |
| ECFS | Europcar Fleet Services |
| ECFS | European Capital Financial Services Limited (Europe) |
| ECFS | Education, Child and Family Studies (coursework; various universities) |
| ECFS | East Coast Fault System |
| ECFS | Executive Committee of the Faculty Senate (various locations; also seen as ECOS) |