List of Acronyms and Initialisms: F - FS

FS

• fs – (s) Femtosecond
• fS – (s) Femtosiemens
• FS
  • (i) Fire Support (military)
  • (s) French Southern and Antarctic Territories (FIPS 10-4 territory code)
• FSA
  • (i) Fire Support Area
  • UK Food Standards Agency
  • Functional Solution Analysis
• FSB
  • (i) Federal'naya Sluzhba Bezopasnosti Rossiyskoi Federatsii (Федера́льная слу́жба безопа́сности Росси́йской Федера́ции, Russian "Federal Security Service of the Russian Federation", succeeded the FSK in 1995)
  • Forward Support Battalion
• FSC
  • (i) Federal Supply Classification
  • (a) Forest Stewardship Council (ecological pressure group
  • Fox Soccer Channel (former name of the U.S. TV channel now known as Fox Soccer)
• FSCL – (i) Fire Support Co-ordination Line
• FSE – (i) Fire Support Element
• F&SF – (i) (The Magazine of) Fantasy & Science Fiction
• FSF – (i) Free Software Foundation
• FSH – (i) Follicle Stimulating Hormone
• FSI – (i) Fuel Stratified Injection
• FSK – (i) Federal'naya Sluzhba Kontrrazvedki (Федера́льная Слу́жба Контрразве́дки, Russian "Federal Counterintelligence Service", succeeded the KGB in 1991)
• FSM
  • (s) Federated States of Micronesia (ISO 3166 trigram)
  • (i) Flying Spaghetti Monster (satirical religion)
• FSO
  • (i) Fire Support Officer
  • Flotilla Staff Officer
  • Foreign Service Officer
• FSS – (i) Fire Support Station
• FSSP – (i) Families of Structurally Similar Proteins
• FST
  • (i) Finance Support Team
  • Finlands Svenska Television (Finland's Swedish-language television)
  • Future Soviet Tank (Cold War era)
• FSTC – (i) Foreign Science Technology Center (now NGIC)
• FSV
  • (i) Fire Support Vehicle
  • Fisheries Survey Vessel
  • Flexible Sender Validation
  • Fort St. Vrain
  • Fußball und Sportverein (German "Football and Sport Association", as in FSV Mainz)