| EFS | A Encapsulated File System 
| Others |
| EFS | Early Fall Start
| Others |
| EFS | Early Feasibility Studies
| Others |
| EFS | Easy Fit System
| Others |
| EFS | Easy Forex System
| Others |
| EFS | Eclipse File System
| Others |
| EFS | EditShare File System
| Others |
| EFS | Education Financial System
| Others |
| EFS | Education for Sustainability
| Others |
| EFS | Educational First Steps
| Others |
| EFS | Educational Furniture Solutions
| Others |
| EFS | Effective Film Speed
| Others |
| EFS | Effective Financing Statement
| Others |
| EFS | Elastic File Storage
| Others |
| EFS | Elastic File System
| Others |
| EFS | Electric Front Seats
| Others |
| EFS | Electrification Futures Study
| Others |
| EFS | Electrolyte Fuel System
| Others |
| EFS | Electronic File System
| Others |
| EFS | Electronic Filing System
| Others |
| EFS | Electronic Form System
| Others |
| EFS | Electronic Forms System
| Others |
| EFS | Electronic Fund Source
| Others |
| EFS | Electronic Fund Systems
| Others |
| EFS | Electronic Funds Source
| Others |
| EFS | Elite Firing Squad
| Others |
| EFS | Email File Service
| Others |
| EFS | Embedded File System
| Others |
| EFS | Emergency Facsimile Service
| Others |
| EFs | Emission Factors
| Others |
| EFS | Encryptable File System
| Others |
| EFS | Encrypted File System
| Others |
| EFS | Encrypting File System
| Others |
| EFS | End Frame Sequence
| Others |
| EFS | Energy Finance Solutions
| Others |
| EFS | Energy for Sustainability
| Others |
| EFS | Engineered Fiber Selection
| Others |
| EFS | Engineering Functional Specification
| Others |
| EFS | English for Foreign Students
| Others |
| EFS | English French Spanish
| Others |
| EFS | Enhanced Filing System
| Others |
| EFS | Enhanced Fujita [EF] scale (weather)
| Others |
| EFS | Enterprise File Services
| Others |
| EFS | Enterprise File System
| Others |
| EFS | Equity Financial Services
| Others |
| EFS | Error Free Seconds
| Others |
| EFS | Error Free Signal
| Others |
| EFS | Etherfast
| Others |
| EFS | European Federation of Sexology
| Others |
| EFS | European Flight Service
| Others |
| EFS | European Fluency Specialists
| Others |
| EFS | Event Filtering Service
| Others |
| EFS | Event Free Survival
| Others |
| EFS | Event Free Survival - time from diagnosis to defined events (e.g. , relapse or death)
| Others |
| EFS | Event-Free Survival
| Others |
| EFS | Every Free Society
| Others |
| EFS | Everything For Sale
| Others |
| EFS | Exponential Fourier Series
| Others |
| EFS | Express Freight Solutions
| Others |
| EFS | Extended Facility Set
| Others |
| EFS | Extended File System
| Others |
| EFS | Extent File System
| Others |
| EFS | External File System
| Others |
| EFS | Facilities Services
| Others |
| EFS | Flowchart (EasyFlow)
| Others |