| Acronym | Definition |
|---|
| EFSL | Emergency Food Security and Livelihood (assessment tool) |
| EFSL | Evangelical Fellowship of Sierra Leone |
| EFSL | Elite Futures Soccer League (New Jersey) |
| EFSL | Emace Foundation of Sri Lanka |
| EFSL | European Forces Swim League |
| EFSL | Embedded File System Library |
| EFSL | Elite Flight Solutions, Inc. (stock symbol) |
| EFSL | European Financial Services Law |
| EFSL | Education for Sustainable Living |
| EFSL | Elements of Federal Securities Law |
| EFSL | Ethics as the Foundation for Supervision and Leadership |
| EFSL | Eagle Flag Supply Ltd |
| EFSL | Elma Form Specification Language |
| EFSL | Extended French Second Language |
| EFSL | Electra Financial Services Ltd |
| EFSL | European Forum for Sign Language |
| EFSL | End of Functional Service Life |
| EFSL | Executive Fire Service Leadership |
| EFSL | Edmonton Finacial Slo-Pitch League (Canada) |