| FTA | Fatigue Test Article | In English | |
| FTA | Flight Test Article | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTA | Fault Tree Analysis | In English | → Quality management |
| FTA | Fair Trade Audit | In English | → Trade |
| FTA | Federal Transit Administration (www.fta.dot.gov) | In English | → Central administration → Transport and postal services |
| FTAA | Federation of Turkish American Associations | In English | → Associations |
| FTAM | File Transfer, Access, and Management | In English | → Computer science |
| FTAM | File Transfer, Access and Management | In English | → Computer science |
| FTAM | File Transfer Access and Management | In English | → Software → Networks, communication |
| FTC | Florida Test Center | In English | → Engineering, technology |
| FTC | Flight Test Conductor | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTC | Future Textiles and Clothing (www.textile-platform.org) | In English | → Textile industry |
| FTD | Flight Test Directive | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTD | Foreign Technology Division | In English | → Engineering, technology |
| FTD | Frontotemporal Dementia | In English | → Neurology |
| FTE | Factory Test Equipment | In English | → Engineering, technology |
| FTE | Forced Test End | In English | |
| FTE | Flight Test Engineer | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTE | Full-Time Equivalent Employee | In English | → Labour, labour economics |
| FTFD | Field Test Force Director | In English | |
| FTI | Film and Television Institute | In English | → Cinema, movies → Telecommunications |
| FTIR | Fourier Transform Infrared | In English | → Mathematics → Physics |
| FTIS | Flight Test Instrumentation System | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTMC | Fault-Tolerant Memory Control | In English | → Memories |
| FTO | Flight Test Objective | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTO | Foreign Technology Office | In English | → Engineering, technology |
| FTO | Functional Test Objective | In English | |
| FTOH | Flight Test Operations Handbook | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTP | Functional Test Program | In English | → Software |
| FTP | Full-Throttle Position | In English | |
| FTP | Functional Test Progress | In English | |
| FTP | Flight Test Procedure | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTP | File Transfer Protocol | In English | → 00463 → Networks, communication |
| FTP | Fundamental Theories of Physics | In English | → Serial publications, periodicals → Physics |
| FTP | Foiled Twisted Pair | In English | → Electrical engineering |
| FTPF | Flight and Training Planning Facility | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTR | Flight Test Requirement | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTR | Functional Test Requirement | In English | |
| FTRD | Flight Test Requirements Document | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTRD | Functional Test Requirements Document | In English | |
| FTS | Far-Term Study | In English | |
| FTS | Federal Telecommunications System | In English | → Telecommunications |
| FTS | Flight Telerobotic Service | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTS | Functional Test Specification | In English | |
| FTS | Far-Term System | In English | |
| FTS | Flight Telerobotic Servicer | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTS | Flight Termination System | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTS | Flight Test System | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTS | Flight Test Station | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FTSE | Financial Times Stock Exchange (www.ftse.com) | In English | → Finance |
| FTSQCO | Fiji Trade Standards and Quality Control Office | In English | → Standardization |
| FTT | Field Test Telescope | In English | → Astronomy |
| FTTH | Fiber To The Home | In English | → Networks, communication → Telecommunications |
| FTVE | Functional Technology Validation Experiment | In English | |
| FTW | Fort Worth Meacham International Airport | In English | → Transport and postal services |
| FTW | From The Wilderness | In English | → Newspapers, journalism → Internet |
| FU | Flight Unit | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FUB | Forward Utility Bridge | In English | |
| FUD | Fear, Uncertainty and Doubt | In English | → 6591 |
| FUI | Federal Unemployment Insurance | In English | → Labour, labour economics → Social welfare |
| FUO | Follow-Up Output | In English | |
| FUT | Flight Unit Test | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FUTA | Federal Unemployment Tax | In English | → Labour, labour economics → Taxes, duties |
| Futur | Future Spring | In English | → Serial publications, periodicals |
| FV | Flight Version | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FV | Front View | In English | |
| FVDS | Fuel Vent and Drain System | In English | → Vehicle engineering |
| FVF | First Vertical Flight | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| FVSS | Fuel Vapor Scrubber System | In English | → Vehicle engineering |
| FVV | Facility Verification Vehicle | In English | → Vehicle engineering |
| FWB | Fahrenheit Wet Bulb | In English | |
| FWBO | Friends of the Western Buddhist Order | In English | → Buddhism → Modern spiritual movements |
| FWC | Filament-Wound Case | In English | |
| FWG | Facility Working Group | In English | |
| FWWM | Food, Water, and Waste Management | In English | → Environmental technology, water supply, waste management → Food technology |
| FWWMS | Food, Water, and Waste Management Subsystem | In English | → Environmental technology, water supply, waste management → Food technology |
| FXO | Foreign Exchange Office | In English | → Telecommunications |
| FXR | Flash XRay | In English | |
| FXS | Foreign eXchange Subscriber | In English | → Telecommunications |
| FY | Fiscal Year | In English | → Economics |
| FYI | For Your Information | In English | |
| FYROM | Former Yugoslav Republic of Macedonia | In English | → Geography |
| FZP | Fresnel Zone Plate | In English | → Optics |
| G | Glycine = G | গ্লাইসিন | In Bengali = G | Glicina | In Catalan = G | Glycin | In Czech = G | Glycin | In Danish = G | Glycin | In German = G | Glicina | In Spanish = G | Glicino | In Esperanto = G | Glycine | In French = G | 글리신 | In Korean = G | Glicin | In Croatian = G | Glisin | In Indonesian = G | Glicina | In Italian = G | גליצין | In Hebrew = G | Glicīns | In Latvian = G | Glycin | In Letzeburgesh = G | Glicinas | In Lithuanian = G | Glicin | In Hungarian = G | Glycine | In Dutch = G | グリシン | In Japanese = G | Glycin | In Norwegian = G | Glicyna | In Polish = G | Glicina | In Portuguese = G | Глицин | In Russian = G | Глицин | In Serbian = G | Glisin | In Sundanese = G | Glysiini | In Finnish = G | Glycin | In Swedish = G | Glisin | In Turkish = G | Гліцин | In Ukrainian = G | 甘氨酸 | In Chinese |
In English | → Biochemistry, biophysics |
| G&A | General and Administrative | In English | |
| G&C | Ground Rules and Constraints | In English | |
| G&C | Guidance and Control | In English | |
| G&CEP | Guidance and Control Equipment Performance | In English | |
| G&CI | Guidance and Control Integration | In English | |
| G&N | Guidance and Navigation | In English | |
| G&NS | Guidance and Navigation System | In English | |
| G&R | Greece & Rome | In English | → Serial publications, periodicals |
| G-CSF | Granulocyte colony stimulating-factor | In English | |
| GA | Ground to Air | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| GA | Glutaraldehyde | In English | → Chemistry |
| GA | General Assembly | In English | |
| GAAO | Georgia Association of Assessing Officials (www.gaao.org) | In English | → Associations → 332 |
| GAB | Guidance Accreditation Body | In English | |
| GABA | γ-Aminobutyric Acid receptor | In English | → Biochemistry, biophysics |
| GAC | Grumman Aerospace Corporation | In English | → Aeronautics, aircraft → Spaceflight engineering, astronautics |
| GACU | Ground Air Conditioning Unit | In English | |
| GACU | Ground Avionics Cooling Unit | In English | → Aeronautics, aircraft |
| GAD | German Astronomical Directory | In English | → Astronomy |
| GADG | Gravity or Acceleration Due to Gravity | In English | → Physics |
| GAEC | Grumman Aircraft Engineering Corporation | In English | → Aeronautics, aircraft |
| GAES | German Academic Exchange Service | In English | |
| GAH | Global Animal Health | In English | → Veterinary medicine |
| GAI | Geospatial Applications and Interoperability | In English | → Geodesy, cartography |
| GAIN | Graphic Aids for Investigating Networks | In English | |
| GAIPDM | Greek Association of Image Processing and Digital Media | In English | → Associations → Computer-based techniques |
| GAM | Geophysics and Astrophysics Monographs | In English | → Serial publications, periodicals → Geophysics |
| GAMS | Guide to Available Mathematical Software | In English | → Software → Mathematics |
| GAN | Giant Axonal Neuropathy | In English | → Neurology |
| GAO | General Accounting Office | In English | |
| GAO | Government Accountability Office | In English | → Public administration, government |
| GApFD | Geophysical and Astrophysical Fluid Dynamics | In English | → Serial publications, periodicals → Astronomy → 533 → Geophysics |
| GAPL | Group Assembly Parts List | In English | |
| GAPP | Generally Accepted Accounting Principles | In English | → Commercial law → Accounting |
| GARD | Group of Autonomous Robots for Demining | In English | → Mechanical engineering → Electronics → Military engineering |
| GAS | Get-Away Special | In English | |
| GASD | Government Aerospace Systems Division | In English | → Spaceflight engineering, astronautics |
| GASP | General Ascent Trajectory and Sizing Program | In English | → Spaceflight engineering, astronautics |
| GASPI | Gimbal Angle, Surface Position Indicator | In English | |
| GATE | Generic Automatic Test Equipment | In English | |
| GATiB | Genome Austria Tissue Bank | In English | → Genetics → 6110182 |
| GATP | Ground Acceptance Test Procedure | In English | |
| GATP | Ground Article Test Procedure | In English | |
| GATT | Gate-Assisted Turnoff Thyristor | In English | → Electronics |
| GATT | General Agreement on Tariffs and Trade = ГДТЦ | Генерален Договор за Трговија и Царини | In Macedonian = ГАТТ | Генеральное соглашение по тарифам и торговле | In Russian = แกตต์ | ความตกลงทั่วไปว่าด้วยการค้าและภาษีศุลกากร | In Thai |
In English | → International economic cooperation |
| GB | Governing Board | In English | → Management |
| GBB | Glass Bottom Boat | In English | |
| GBD | Global Burst Detector | In English | |
| GBD | Government Business Division | In English | → Economics |
| GBDe | Global Business Dialogue on e-Commerce | In English | |
| GBI | Grand Bahama Island | In English | |
| GBIF | Global Biodiversity Information Facility | In English | → Environment, environmental sciences |
| GBioC | Global Biogeochemical Cycles | In English | → Serial publications, periodicals → 55047 |
| GBL | Ground-Based Laser | In English | |
| GBM | Globular Basement Membrane | In English | → Biological sciences → Anatomy |
| GBOTV | Ground-Based OTV | In English | |
| GBR | Ground-Based Radar | In English | |
| GBS | Ground-Based Software | In English | → Software |
| GBS | Guillain Barre Syndrome | In English | → Pathology |
| GBS | Google Books Search | In English | → Libraries → Networks, communication |
| GBSS | Ground-Based Surveillance System | In English | |
| GBT | Gyro Bias Calibration Value | In English | |
| GC | Ground Contact | In English | |
| GC | Gimbal Case | In English | |
| GC | Guidance Control | In English | |
| GC | Ground Control(ler) | In English | |
| GC | Guidance Computer | In English | → Hardware |
| GC | Gas Chromatography | In English | |
| GC | Gyrocompass | In English | |
| GC | Ground Computer | In English | → Hardware |
| GCA | Ground-Controlled Approach | In English | |
| GCA | Guidance Coupler Assembly | In English | |
| GCC | Ground Communications Coordinator | In English | → Telecommunications |
| GCC | Ground Control Center | In English | |
| GCCC | Ground Control Computer Center | In English | → Hardware |
| GCCO | Ground Control Checkout | In English | |
| GCD | Greatest Common Divisor | In English | → Mathematics |
| GCDC | Ground Checkout Display and Control | In English | |
| GCDS | Ground Checkout Display and Control System | In English | |
| GCE | GPS Cargo Element | In English | |
| GCEAL | General Certicate of Education Advanced Level | In English | → Education |
| GCF | Greatest Common Factor | In English | → Mathematics |
| GCF | Ground Communications Facility | In English | → Telecommunications |
| GCGH | Grand Challenges in Global Health | In English | → Medicine |
| GCHWR | Gas Cooled Heavy Water Reactor | In English | → Nuclear technology |
| GCHX | Ground Cooling Heat Exchanger | In English | |
| GCI | Ground-Controlled Interception | In English | |
| GCI | Graphical Computer Interface | In English | → Human-computer interaction |
| GCID | Ground Computer Interface Device | In English | → Human-computer interaction |
| GCIL | Ground Control Interface Logic | In English | → Human-computer interaction |
| GCIL | Ground Command Interface Logic | In English | → Human-computer interaction |
| GCILC | Ground Command Interface Logic Controller | In English | |
| GCILU | Ground Control Interface Logic Unit | In English | |
| GCL | Ground Control Landing | In English | |
| GCLW | General Confederation for Lebanese Workers | In English | → Organizations and associations → Labour, labour economics |
| GCM | General Circulation Model | In English | → Meteorology, climatology → Hydrology |
| GCN | Ground Communications Network | In English | → Telecommunications → Networks, communication |
| GCN | Ground Control Network | In English | → Networks, communication |
| GCNew | Galactic Center Newsletter | In English | → Serial publications, periodicals → Astronomy |
| GCO | Ground Checkout | In English | → Engineering, technology |
| GCOS | General Computer Operational System | In English | → Computer science |
| GCOS | Ground Computer Operating System | In English | → Operating systems |
| GCOS | Global Climate Observation System | In English | → Meteorology, climatology |
| GCP | Good Clinical Practice | In English | → Pharmacology, toxicology |
| GCP | Gamma Capital Partners (www.gamma-capital.com) | In English | → Finance |
| GCR | Ground-Controlled Radar | In English | → Engineering, technology |
| GCR | Group-Coded Recording | In English | → Engineering, technology |
| GCR | Gas Cooled Reactor | In English | → Nuclear technology |
| GCS | Global Communication & Services GmbH | In English | |
| GCS | Ground Communications System | In English | → Telecommunications |
| GCS | Ground Control Station | In English | |
| GCS | Guidance Cutoff Signal | In English | → Telecommunications |
| GCTS | Gas Component Test Stand | In English | → Engineering, technology |
| GCTS | Ground Communication Tracking System | In English | → Telecommunications |
| GCU | Generator Control Unit | In English | → Mechanical engineering |
| GCU | General Control Unit | In English | → Engineering, technology |
|