| Acronym | Definition |
|---|
| EFS➣Établissement Français du Sang (French: French Blood Establishment) |
| EFS➣Enfield Federal Savings (Enfield, CT) |
| EFS➣Education for Sustainability (various locations) |
| EFS➣Event Free Survival (survival rates in clinical trials) |
| EFS➣Encrypted File System (Microsoft Windows 2000) |
| EFS➣Éléments Français au Sénégal (French: French Elements in Senegal) |
| EFS➣Energy for Sustainability (University of Coimbra initiative; Portugal) |
| EFS➣Electronic Filing System |
| EFS➣Encrypted File Sharing (computing) |
| EFS➣Evangeliska Fosterlandsstiftelsen (Sweden) |
| EFS➣Energy Financial Services (General Electric) |
| EFS➣Euro Finanz Service (Austrian financial service) |
| EFS➣Economics and Finance Society (various schools) |
| EFS➣Error Free Signal |
| EFS➣Enhanced Filing System |
| EFS➣Enterprise File Services |
| EFS➣Etherfast |
| EFS➣Encrypting File System |
| EFS➣Extended File System |
| EFS➣Error Free Seconds |
| EFS➣Electronic Financial Services (various companies) |
| EFS➣École Française de Spéléologie (French: French School of Speleology) |
| EFS➣Expeditionary Fighter Squadron |
| EFS➣Encryption File System (Intel) |
| EFS➣Energy Finance Solutions (various locations) |
| EFS➣Economic and Financial Studies (various locations) |
| EFS➣European Federation of Sexology |
| EFS➣Electronic Filing Service |
| EFS➣Embedded File System |
| EFS➣Error Free Seconds (percentage) |
| EFS➣Express Financial Services (various organizations) |
| EFS➣Eesti Filmi Sihtasutuse (Estonian: Estonian Film Foundation) |
| EFS➣Enterprise File Services (HP) |
| EFS➣Email Forwarding Service (software) |
| EFS➣Employment & Family Services (Cuyahoga County, OH) |
| EFS➣English for Foreign Students |
| EFS➣Electric Field Stimulation |
| EFS➣Electric Field Strength |
| EFS➣Emperor of the Fading Suns (computer game) |
| EFS➣Enchanted Forest Sanctuary (Florida) |
| EFS➣Enemy-Free Space (insects) |
| EFS➣Enterprise Freight Shopping (software) |
| EFS➣Extra Fine Structure (metallurgy) |
| EFS➣Environment Friends Society |
| EFS➣Enterprise File System (Kitchener, Ontario, Canada) |
| EFS➣Economic Farm Surplus (farming productivity) |
| EFS➣Excellent Foreign Student (various locations) |
| EFS➣Ensemble Forecast System |
| EFS➣Engineering Functional Specification |
| EFS➣Engineering Feasibility Study |
| EFS➣Enhanced Flight Screening |
| EFS➣External File System |
| EFS➣Export Facilitation Scheme (Australian government) |
| EFS➣Environmental Friendly Solutions (UK) |
| EFS➣End of Frame Sequence |
| EFS➣Extreme Fantasy Sports |
| EFS➣Elite Fitness System |
| EFS➣Extendibility, Flexibility, Scalability |
| EFS➣Escape From Samsara |
| EFS➣Electronic Form System |
| EFS➣Enhanced Fujita Scale (tornado strength) |
| EFS➣Effective Field Size |
| EFS➣Electric Funstuff (band & software company) |
| EFS➣Emergency Feedwater System |
| EFS➣Edwards, Faust, & Smith (Maine accounting firm) |
| EFS➣Enterprise File Sharing |
| EFS➣Electronic Firing Switch |
| EFS➣Environmental Feasibility Study |
| EFS➣Electronic Filing Systems, Inc. |
| EFS➣Emergency Feeding Service |
| EFS➣Elastomeric Firestop (construction) |
| EFS➣Earth-Fixed System |
| EFS➣Enterprise Fax Solution |
| EFS➣Electric Field-induced Spectra |
| EFS➣Extended Fuel System |
| EFS➣Encrypting Firewall System |
| EFS➣Extended Function Set |
| EFS➣Exercise for the Student |
| EFS➣External Focus Subassembly |
| EFS➣Equal Frequency Separation |
| EFS➣Electrical Feeder System |
| EFS➣Essential Fire Support |
| EFS➣Expert Finding Systems |