Free Software Foundation (EA)
Saint Francis Seminary - Wisconsin
San Fernando - Spain - Seismograph station code, US Geological Survey (SEIS)
San Francisco Shopping Center, CA - Amtrak rail station code
San Francisco Symphony (SAUS)
San Francisco Systems, Inc. - Commercial firm
Santa Fe Snyder - NYSE symbol (SPSG)
Santa Fe Snyder Corp. - NYSE symbol
Santa Fe Southern Railway - Federal Railroad Administration identification code
Saskatchewan Forest Service (SAUS)
Saybold Furol Seconds (SAUS)
S-Band Feed System
Scalable File Share - HP file server
Scholarship for Service - Emergency Management (EMA)
School Focused Secondment (AIE)
School of Field Studies - Beverly, MA
Science-Fiction Studies - A publication (BRI)
Sea Front System (SAUS)
Seamen's and Firemen's Society - A union - British
Secure File System - Telecommunications (OSI)
Sektion fuer Systementwicklung - GID - Information retrieval
Self-Certifying File System - Provide transparent encryption of communications and authentication
Semiconductor Financial System (TIMI)
Senior Flight Surgeon - Army (AABC)
Senior Foreign Service (SAUS)
Serial Focal Seizures - Medicine
Shakespeare for Students - A publication
Shared File System - Telecommunications
Sharm es-Sheikh - Israel - Airport symbol (AD)
Shoot-Fail-Shoot - Military
Shuttle Flight Status - NASA (MCD)
Simplified Firing System
Sine Fraude Sua - Without Fraud on His Part - Latin (DLA)
Sioux Falls - Diocesan abbreviation - South Dakota (TOCD)
Skin and Facial Stapler - Surgery (DAVI)
Small Firms Service - British
Smart FileSystem
Smith's Flight System - Aviation (AIA)
Society for Foodservice Management (EA)
Society for Foodservice Systems (EA)
Society for Freedom in Science
Society for French Studies - British
Society of Fleet Supervisors (SAUS)
Society of Food Service Systems (SAUS)
Sodium Formaldehyde Sulfoxylate - Organic chemistry
Software Facilities and Standards - Computer science (TEL)
Solar Flux Spectrometer (SAUS)
Solicitors' Financial Services - British
Sonic Frequency System
Sorption Filter System (SAUS)
Sort Filter Skyline
South African Sign Language - Language code (ETLW)
Southern Frontier Air Transport Ltd. - Canada - ICAO designator (FAAC)
South San Francisco, CA - Location identifier - FAA (FAAL)
Space Flight Systems (SAA)
Space Futures Society (EA)
Speech Filing System (SAUS)
Split Function Study (MAE)
Star Field Sensor
Start of Frame Sequence (CIST)
State Fleet Services - New South Wales, Australia
State Funding Study (EEVL)
Statistical Fine Structure - Physics
Steam and Feedwater System - Nuclear energy (NRCH)
Step Function Solution (SAUS)
Strong-Focusing Synchrotron (SAUS)
Suomen Standardisoimisliitto (CENE)
Suomen Standardisomisliitto - Finnish Standards Association - Information service or system (IID)
Super Food Services - NYSE symbol
Super Food Services, Inc. - NYSE symbol (SPSG)
Surfaced Four Sides - Technical drawings
Surface Effect Fast Sea Lift Ship - MTMC (TAG)
Surfside Houseboats - NCIC boat manufacturer code (NCIC)
Symbolic File Support
System Failure Summaries - NASA (KSC)
System File Server (SAUS)
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