| Acronym | Definition |
|---|
| EFAC | École de Formation a l'Action Culturelle (French: Training School Cultural Action) |
| EFAC | École des Fonctions Administratives et Commerciales (French: School of Business and Administrative Functions) |
| EFAC | Evangelical Fellowship in the Anglican Communion (USA) |
| EFAC | Employee Freedom Action Committee (Washington, DC) |
| EFAC | European Factory Automation Committee (est. 2000; trade associations; various locations) |
| EFAC | European Federation of Agricultural Consultants (est. 1997) |
| EFAC | Emmanuel Fernandez Audit Conseils (French: Manny Fernandez Audit Tips) |
| EFAC | Export Finance Assistance Center (Seattle, WA) |
| EFAC | Enlisted Field Advisory Council |
| EFAC | Enhanced Forward Air Controller |