| SEF | Entomological Society of France 
| Others |
| SEF | Saint Etienne France
| Others |
| SEF | Sales Education Foundation
| Others |
| SEF | Saratoga Education Foundation
| Others |
| SEF | School Employees Fund
| Others |
| SEF | Scituate Education Foundation
| Others |
| SEF | Sealift Enhancement Feature
| Others |
| SEF | Search Engine Friendly
| Others |
| SEF | Seasonal Enhancement Factor
| Others |
| SEF | Sebring, Florida USA
| Others |
| SEF | Self Evaluation Formula
| Others |
| SEF | Severely Errored Framing
| Others |
| SEF | Sex Education Forum
| Others |
| SEF | Shinnyo en Foundation
| Others |
| SEF | Short Edge Feed
| Others |
| SEF | Show Entering Forum
| Others |
| SEF | Shrewsbury Education Foundation
| Others |
| SEF | Signal Extraction and Forecasting
| Others |
| SEF | Simplified Edi Format
| Others |
| SEF | Sindh Education Foundation
| Others |
| SEF | Single Ended Fast
| Others |
| SEF | Single-Engine Fighter
| Military, Air Force, Army, Defence, Navy, Weapon, Transport, Air Transport, Aircraft |
| SEF | Siri Eyes Free
| Others |
| SEF | Skills Enhancement Fund
| Others |
| SEF | Slab Excitation Fraction
| Others |
| SEF | Small Enterprise Foundation
| Others |
| SEF | Smaps Exchange Format
| Others |
| SEF | Smoke Extractor Fan
| Others |
| SEF | Social Entrepreneurship Forum
| Others |
| SEF | Software Enabled Flash
| Others |
| SEF | Software Engineering Facility
| Others |
| SEF | Software Environment Fee
| Others |
| SEF | Source Explicit Forwarding
| Others |
| SEF | Southern Education Foundation
| Others |
| SEF | Special Experimental Flight
| Others |
| SEF | Spectral Energy Flux
| Others |
| SEF | Standard Endorsement Form
| Others |
| SEF | Standards Exchange Format
| Others |
| SEF | State Equipment Fleet
| Others |
| SEF | Stealth Exhaust Finisher
| Others |
| SEF | Steganos Encrypted File
| Others |
| SEF | Stonington Education Fund
| Others |
| SEF | Structural Engineers Foundation
| Others |
| SEF | Student Emergency Fund
| Others |
| SEF | Student Engagement Fund
| Others |
| SEF | Student Events Fund
| Others |
| SEF | Subaru Enthusiasts Forum
| Others |
| SEF | Subcommittee on Ecological Flows
| Others |
| SEF | Summer Enhancement Fellowship
| Others |
| SEF | Summit Educational Foundation
| Others |
| SEF | Supplementary Eye Field
| Others |
| SEF | Supplementary eye fields
| Others |
| SEF | Sustainable Energy Fund
| Others |
| SEF | Sustainable Engineering Forum
| Others |
| SEF | Swallow Education Foundation
| Others |
| SEF | Swap Execution Facilities
| Others |
| SEF | Swap Execution Facility
| Others |
| SEF | Swap Execution Facilty
| Others |
| SEF | Symantec Enterprise Firewall
| Others |
| SEF | Symmetric Electromagnetic Field
| Others |