

| Acronym | Sense | Language | Topics | 
|---|---|---|---|
| FCM | Football Club Maastricht | In Dutch | → Organizations and associations → Football and rugby | 
| FCMC | Facility Control and Monitor Console | In English | |
| FCML | Faculdade de Ciências Médicas de Lisboa | In Portuguese | → Higher education, universities → Medicine | 
| FCMTE | Familial Cortical Myoclonic Tremor with Epilepsy | In English | → Pathology | 
| FCMU | Foot-Controlled Maneuvering Unit | In English | |
| FCN | Football Club Nieuwland | In Dutch | → Organizations and associations → Football and rugby | 
| FCO | Foreign and Commonwealth Office | In English | → International relations → Central administration | 
| FCO | Field Change Order | In English | |
| FCO | Final Checkout | In English | |
| FCO | Flight Crew Operations | In English | → Aeronautics, aircraft → Astronautics | 
| FCO | Functional Checkout | In English | |
| FCO | Fièvre Catarrhale Ovine | In French | → Veterinary medicine | 
| FCO | Foreign & Commonwealth Office | In English | → Public administration, government | 
| FCOB | Flight Crew Operations Branch | In English | → Aeronautics, aircraft → Astronautics | 
| FCOD | Flight Crew Operations Directorate | In English | → Aeronautics, aircraft → Astronautics | 
| FCOH | Flight Controller's Operational Handbook | In English | → Aeronautics, aircraft → Astronautics | 
| FCOS | Flight Computer Operating System | In English | → Aeronautics, aircraft → Astronautics → Operating systems | 
| FCOS | Flight Control Operating System | In English | → Aeronautics, aircraft → Astronautics → Operating systems | 
| FCOS | Flight Control Operational Software | In English | → Aeronautics, aircraft → Astronautics → Software | 
| FCP | Failure Correction Panel | In English | |
| FCP | Firm Cost Proposal | In English | → Prices | 
| FCP | Flight Correction Proposal | In English | → Aeronautics, aircraft → Astronautics | 
| FCP | Fuel Cell Power Plant | In English | → Vehicle engineering | 
| FCP | Fuel Cell Propellant | In English | → Astronautics | 
| FCPE | Fédération des Conseils de Parents d'Élèves (www.fcpe.asso.fr) | In French | → Organizations and associations → Education → France | 
| FCPE | Fonds Commun de Placement d'Entreprise | In French | → Finance → Labour, labour economics | 
| FCPF | Forest Carbon Partnership Facility | In English | → Environmental protection → Forestry | 
| FCPh | Fundamentals of Cosmic Physics | In English | → Serial publications, periodicals → Astronomy | 
| FCPI | Fonds Commun de Placements pour l'Innovation | In French | → Finance | 
| FCPI | Fonds Commun de Placement dans l'Innovation | In French | → Banks → Engineering, technology | 
| FCPR | Fonds Commun de Placement à Risque | In French | → Finance | 
| FCPR | Fonds Commun de Placement à Risques | In French | → Finance | 
| FCPS | Fuel Cell Power System | In English | → Vehicle engineering | 
| FCR | Facility Change Request | In English | |
| FCR | Final Configuration Review | In English | |
| FCR | Flight Configuration Review | In English | → Aeronautics, aircraft → Astronautics | 
| FCR | Flight Control Room | In English | → Aeronautics, aircraft → Astronautics | 
| FCR | France Câble Radio | In French | → Telecommunications → France | 
| FCRA | Fecal Collection Receptacle Assembly | In English | |
| FCRI | Fondation Canadienne pour la Recherche sur l'Incontinence | In French | → Foundations → Urology → Canada | 
| FCS | Fecal Containment System | In English | |
| FCS | Federal Communications System | In English | → Telecommunications | 
| FCS | Fire Control System | In English | |
| FCS | Flight Control Simulator | In English | → Aeronautics, aircraft → Astronautics | 
| FCS | Flight Control System | In English | → Aeronautics, aircraft → Astronautics | 
| FCS | Flight Crew System | In English | → Aeronautics, aircraft → Astronautics | 
| FCS | Front Crew System | In English | |
| FCS | Football Club Schulpweg | In Dutch | → Organizations and associations → Football and rugby | 
| FCSD | Flight Crew Support Division | In English | → Aeronautics, aircraft → Astronautics | 
| FCSH | Faculdade de Ciências Sociais e Humanas | In Portuguese | → Higher education, universities → Social sciences | 
| FCSM | Flight Combustion Stability Monitor | In English | → Aeronautics, aircraft → Astronautics | 
| FCSM | Football Club Schulpweg – Metro | In Dutch | → Organizations and associations → Football and rugby | 
| FCSS | Fuel Cell Servicing System | In English | → Vehicle engineering | 
| FCSTF | FUel Cell System Test Facility | In English | → Vehicle engineering | 
| FCT | Faculdade de Ciências e Tecnologia | In Portuguese | → Higher education, universities → Mathematics and natural sciences → Engineering, technology | 
| FCT | Filament Center Tap | In English | |
| FCT | Flight Control Team | In English | → Aeronautics, aircraft → Astronautics | 
| FCT | Flight Controller Trainer | In English | → Aeronautics, aircraft → Astronautics | 
| FCT | Flight Crew Trainer | In English | → Aeronautics, aircraft → Astronautics | 
| FCT | Fuel Cell Test | In English | → Vehicle engineering | 
| FCT | Fundação Ciência Tecnologia | In Portuguese | → Foundations → Mathematics and natural sciences → Engineering, technology | 
| FCTB | Flight Crew Training Building | In English | → Education → Aeronautics, aircraft → Astronautics | 
| FCTF | Fuel Cell Test Facility | In English | → Vehicle engineering | 
| FCTR | Flight Controller Training Room | In English | → Education → Aeronautics, aircraft → Astronautics | 
| FCTS | Flight Crew Trainer Simulator | In English | → Aeronautics, aircraft → Astronautics | 
| FCTVA | Fonds de Compensation pour la Taxe sur la Valeur Ajoutée | In French | → Finance → Taxes, duties | 
| FCTVA | Fonds de Compensation de la Taxe sur la Valeur Ajoutée | In French | → Taxes, duties | 
| FCU | Fluid Checkout Unit | In English | |
| FCV | Flow Control Valve | In English | |
| FCV | Fonds de Crédits pour les Villages | In French | → Finance → Regional planning | 
| FCV | Football Club 't Ven | In Dutch | → Organizations and associations → Football and rugby | 
| FCVV | Federale Commissie Verkeersveiligheid | In Dutch | → Public administration, government → Transport and postal services | 
| FCW | Format Control Word | In English | |
| FCyT | Federación de Comunicación y Transporte | In Spanish | → Organizations and associations → Labour, labour economics → Telecommunications → Transport and postal services | 
| FD | Fakdelegito | In Esperanto | → Organizations and associations | 
| FD | Cumulative Frequency Distribution | In English | |
| FD | Formal Description | In English | |
| FD | Fault Detection | In English | |
| FD | Flight Day | In English | → Aeronautics, aircraft → Astronautics | 
| FD | Flight Director | In English | → Aeronautics, aircraft → Astronautics | 
| FD | Freeze-Dried | In English | |
| FD | Function(al) Designator | In English | |
| FD | Fouilles de Delphes | In French | → Serial publications, periodicals → Archeology | 
| FD/FI | Fault Detection/Fault Isolation | In English | |
| FDA | Food and Drug Administration (www.fda.gov) | In English | → Central administration → Pharmacology, toxicology → Food technology | 
| FDA | Fault Detection and Annunciation | In English | |
| FDA | Flight Deck Assembly | In English | → Aeronautics, aircraft → Astronautics | 
| FDA | Frais de Distribution et d'Administration | In French | |
| FDAI | Flight Director Attitude Indicator | In English | → Aeronautics, aircraft → Astronautics | 
| FDB | Facility Data Base | In English | |
| FDB | Fahrenheit Dry Bulb | In English | |
| FDCF | Flight Design Control Facility | In English | → Aeronautics, aircraft → Astronautics | 
| FDDB | Function Designator Data Base | In English | |
| FDDI | Fiber Distributed Data Interface | In English | → Internet | 
| FDEPS | Fluid Dynamics in Earth and Planetary Sciences | In English | → Earth sciences | 
| FDES | Fonds de Développement Économique et Social | In French | → Development → Regional planning | 
| FDF | First Drop Flight | In English | → Aeronautics, aircraft → Astronautics | 
| FDF | Flight Data File | In English | → Files → Aeronautics, aircraft → Astronautics | 
| FdF | Fondation de France (www.fdf.org) | In French | → Foundations → France | 
| FDI | Foreign Direct Investment | In English | → 332 → 658 | 
| FDI | Failure Detector Indicator | In English | |
| FDI | Fault Detection and Identification | In English | |
| FDI | Fault Detection and Isolation | In English | |
| FDI | Flight Detection and Isolation | In English | → Aeronautics, aircraft → Astronautics | 
| FDI | Flight Director Instrument | In English | → Aeronautics, aircraft → Astronautics | 
| FDI | Fédération Dentaire Internationale (www.fdiworldental.org) | In English | → Organizations and associations → Dentistry | 
| FDIR | Fault Detection, Identification, and Recovery | In English | |
| FDIR | Fault Detection, Isolation, and Recovery | In English | |
| FDIR | Fault Detection, Isolation, and Reconfiguration | In English | |
| FDIS | Final Draft International Standard | In English | → Standardization | 
| FDJ | Freie Deutsche Jugend | In German | → Organizations and associations → Germany | 
| FDJ | Française Des Jeux (www.francaisedesjeux.com) | In French | → Entertainment | 
| FDK | Flight Display Keyboard | In English | → Aeronautics, aircraft → Astronautics → Software | 
| FDL | Flight Director Loop | In English | → Aeronautics, aircraft → Astronautics | 
| FDL | FERIA Description Language | In English | → Software | 
| FDLC | Final Design Load Cycle | In English | |
| FDLI | Food & Drug Law Institute (www.fdli.org) | In English | → Research institutes → Law, jurisprudence → Pharmacology, toxicology → Food technology | 
| FDLP | Front Démocratique de Libération de la Palestine | In French | → Political parties and movements | 
| FDM | Fused Deposition Modeling | In English | |
| FDM | Flight Data Manager | In English | → Aeronautics, aircraft → Astronautics | 
| FDM | Flight Design Manager | In English | → Aeronautics, aircraft → Astronautics | 
| FDM | Frequency Data Multiplexer | In English | |
| FDM | Frequency Division Multiplexer | In English | |
| FDM | Frequency Domain Multiplexer | In English | |
| FDM | Fiche de Demande de Modification | In French | → Quality management | 
| FDMA | Frequency Division Multiple Access | In English | → Telecommunications | 
| FDMFR | Fédération Départementale des Maisons Familiales Rurales | In French | → Organizations and associations → Tourism | 
| FDN | French Data Network | In English | → Internet → Telecommunications | 
| FDNB | Fluorodinitrobenzene | In English | → Chemicals → Biotechnology | 
| FDO | Fee Determination Official | In English | |
| FDO | Flight Director's Office | In English | → Aeronautics, aircraft → Astronautics | 
| FDO | Flight Dynamics Officer | In English | → Aeronautics, aircraft → Astronautics | 
| FDOR | Flight Design Operations Review | In English | → Aeronautics, aircraft → Astronautics | 
| FDP | Fédération Départementale de Pêche | In French | → Organizations and associations → Fishing, hunting | 
| FDP | Flight Design Panel | In English | → Aeronautics, aircraft → Astronautics | 
| FDP | Fibrin Degradation Product | In English | → Biochemistry, biophysics | 
| FDPME | Fonds de Développement des PME | In French | → Economics | 
| FDPTP | Fonds Départemental de Péréquation de la Taxe Professionnelle | In French | → 3363 → Labour, labour economics | 
| FDQ | Fashion Doll Quarterly | In English | → Serial publications, periodicals → Textile industry → Entertainment | 
| FdQ | Freunde der Querflöte | In German | → Organizations and associations → Music | 
| FDQ | Food and Drink Qualifications | In English | → Quality management → Beverage industry → Food technology | 
| FDQ | Fränkisches Dixielandquartett & Washboard | In German | → Organizations and associations → Music | 
| FDR | False Discovery Rate | In English | → Biochemistry, biophysics | 
| FDR | Final Design Review | In English | |
| FDR | Flight Definition Requirement | In English | → Aeronautics, aircraft → Astronautics | 
| FDR | Functional Design Review | In English | |
| FDRD | Flight Definition and Requirements Directive | In English | → Aeronautics, aircraft → Astronautics | 
| FDRD | Flight Definition and Requirements Document | In English | → Aeronautics, aircraft → Astronautics | 
| FDRD | Flight Determination and Requirements Directive | In English | → Aeronautics, aircraft → Astronautics | 
| FDRI | Flight Director Rate Indicator | In English | → Aeronautics, aircraft → Astronautics | 
| FDS | Failure Dynamics Software | In English | → Software | 
| FDS | Functional Design Specification | In English | |
| FDS | Fire Detection and Suppression | In English | |
| FDS | Flight Design and Scheduling | In English | → Aeronautics, aircraft → Astronautics | 
| FDS | Flight Design System | In English | → Aeronautics, aircraft → Astronautics | 
| FDS | Flight Dynamics Simulator | In English | → Aeronautics, aircraft → Astronautics | 
| FDS | Flight Dynamics Software | In English | → Software → Aeronautics, aircraft → Astronautics | 
| FDS | Flight Dynamics Support | In English | → Aeronautics, aircraft → Astronautics | 
| FDS | Flight Dynamics System | In English | → Aeronautics, aircraft → Astronautics | 
| FDS | Fluid Distribution System | In English | |
| FDS | Flex Data Services | In English | → Software | 
| FDS | Fit Door Sport | In Dutch | → Organizations and associations → Sport, physical exercises | 
| FDSC | Flight Dynamics Simulation Complex | In English | → Aeronautics, aircraft → Astronautics | 
| FDSC | Flight Dynamics Situation Complex | In English | → Aeronautics, aircraft → Astronautics | 
| FDSCU | Fluid Distribution System Control Unit | In English | |
| FDSEA | Fédération Départementale des Syndicats d'Exploitants Agricoles | In French | → Organizations and associations → Agricultural sciences | 
| FDSHJ | Fervent Daughters of the Saint Heart of Jesus | In English | → Roman catholic church | 
| FDSR | Final Design Status Review | In English | |
| FDSR | Financial Data Submission and Reconciliation = PRDF | Présentation et de Rapprochement des Données Financières | In French | In English | → Finance | 
| FDSR | Front Desk Service Representative | In English | → Tourism | 
| FDT | Formal Description Technique | In English | → Engineering, technology | 
| FDT | Full-Duplex Teletype | In English | → Telecommunications | 
| FDT | Foyer à Double Tarification | In French | |
| FDTE | Force Development Test and Experimentation | In English | |
| FDTPE | Fonds Départemental d'Aide aux Très Petites Entreprises | In French | → Finance → Economics | 
| FDU | Fluid Distribution Unit | In English | |
| FDU | Fratelli Dell'Uomo | In Italian | → Organizations and associations | 
| FE | Further Education | In English | → Education | 
| FE | Flight Experiment | In English | → Aeronautics, aircraft → Astronautics | 
| FE | Force Execution | In English | |
| FE | Federación de Enseñanza | In Spanish | → Organizations and associations → Labour, labour economics | 
| Fe | Yster = Fe | Eisen | In Tosk = Fe | حديد | In Arabic = Fe | Fierro | In Asturian = Fe | Dəmir | In Azerbaijani = Fe | Жалеза | In Belarusian = Fe | Желязо | In Bulgarian = Fe | লোহা | In Bengali = Fe | Houarn | In Breton = Fe | Željezo | In Bosnian = Fe | Ferro | In Catalan = Fe | Ferru | In Corsican = Fe | Železo | In Czech = Fe | Тимĕр | In Chuvash = Fe | Haearn | In Welsh = Fe | Jern | In Danish = Fe | Eisen | In German = Fe | Σίδηρος | In Greek = Fe | Iron | In English = Fe | Fero | In Esperanto = Fe | Hierro | In Spanish = Fe | Raud | In Estonian = Fe | Burdina | In Basque = Fe | آهن | In Persian = Fe | Rauta | In Finnish = Fe | Fier | In Friulian = Fe | Iarann | In Irish = Fe | 鐵 | GAN = Fe | Iarann | In Scottish Gaelic = Fe | Ferro | In Galician = Fe | Kuarepoti | GN = Fe | લોખંડ | In Gujarati = Fe | Yiarn | In Manx = Fe | Thiet | HAK = Fe | ברזל | In Hebrew = Fe | लोहम् | In Hindi = Fe | Željezo | In Croatian = Fe | Fè | In Haitian Creole = Fe | Vas | In Hungarian = Fe | Երկաթ | In Armenian = Fe | Ferro | In Interlingua = Fe | Besi | In Indonesian = Fe | Fero | In Ido = Fe | Járn | In Icelandic = Fe | Ferro | In Italian = Fe | 鉄 | In Japanese = Fe | tirse | In Lojban = Fe | Wesi | JV = Fe | რკინა | In Georgian = Fe | Kibende | KG = Fe | 철 | In Korean = Fe | Eisen | In Kölsch = Fe | Hesin | In Kurdish = Fe | Ferrum | In Latin = Fe | Eisen | In Letzeburgesh = Fe | Iezer | In Limburgish = Fe | Ebendé | In Lingala = Fe | Geležis | In Lithuanian = Fe | Dzelzs | In Latvian = Fe | Rino | In Māori = Fe | Железо | In Macedonian = Fe | ഇരുമ്പ് | In Malayalam = Fe | Төмөр | In Mongolian = Fe | लोखंड | In Marathi = Fe | Besi | In Malay = Fe | Ħadid | In Maltese = Fe | Кшни | MYV = Fe | Tlīltepoztli | En Nahuatl = Fe | Iesen | In Low German = Fe | IJzer | In Dutch = Fe | Jern | In Nynorsk = Fe | Jern | In Norwegian = Fe | Fé | In Norman = Fe | Fèrre | In Occitan = Fe | Żelazo | In Polish = Fe | Ferro | In Portuguese = Fe | Chuki | In Quechua = Fe | Fier | In Romanian = Fe | Железо | In Russian = Fe | लोहम् | In Sanskrit = Fe | Ferru | In Sicilian = Fe | Airn | SCO = Fe | Željezo | In Serbo-Croatian = Fe | Železo | In Slovak = Fe | Železo | In Slovenian = Fe | Hekuri | SQ = Fe | Гвожђе | In Serbian = Fe | Järn | In Swedish = Fe | Chuma | In Swahili = Fe | இரும்பு | In Tamil = Fe | ఇనుము | In Telugu = Fe | Оҳан | In Tajik = Fe | เหล็ก | In Thai = Fe | Demir | In Turkish = Fe | Залізо | In Ukrainian = Fe | Temir | In Uzbek = Fe | Fero | VEC = Fe | Sắt | In Vietnamese = Fe | אייזן | In Yiddisch = Fe | 铁 | In Chinese | In Afrikaans | → Chemistry | 
| Fe | Eisen = (look above) | In Tosk | → Chemistry | 
| Fe | حديد = (look above) | In Arabic | → Chemistry | 
| Fe | Fierro = (look above) | In Asturian | → Chemistry | 
| Fe | Dəmir = (look above) | In Azerbaijani | → Chemistry | 
| Fe | Жалеза = (look above) | In Belarusian | → Chemistry | 
| Fe | Желязо = (look above) | In Bulgarian | → Chemistry | 
| Fe | লোহা = (look above) | In Bengali | → Chemistry | 
| Fe | Houarn = (look above) | In Breton | → Chemistry | 
| Fe | Željezo = (look above) | In Bosnian | → Chemistry | 
| Fe | Ferro = (look above) | In Catalan | → Chemistry | 
| Fe | Ferru = (look above) | In Corsican | → Chemistry | 
| Fe | Železo = (look above) | In Czech | → Chemistry | 
| Fe | Тимĕр = (look above) | In Chuvash | → Chemistry | 
| Fe | Haearn = (look above) | In Welsh | → Chemistry | 
| Fe | Jern = (look above) | In Danish | → Chemistry | 
| Fe | Eisen = (look above) | In German | → Chemistry | 
| Fe | Σίδηρος = (look above) | In Greek | → Chemistry | 
| Fe | Iron = (look above) | In English | → Chemistry |