FA Football Association (Associação de Futebol Britânica)
FAA Federal Aviation Agency (Governo americano)
FACD Foreign Area Customer Dialing
FAO Food and Agriculture Organization (Governo americano)
FAQ Frequently Asked Questions (Espacial)
FAR Federal Acquisition Regulations
FAS Foreign Agricultural Service
FAS Free Alongside Ship
FASST Flexible Architecture Standard System Technology
FAST Fast Auroral SnapshoT explorer (Espacial)
FAT Foreign Area Translation
FAX FAcsimile
FB Freight Bill
FBI Federal Bureau of Investigation (Governo americano)
FCC Federal Communications Commission (Governo americano)
FCC Federal Computer Conference
FCCSET Federal Coordinating Committee for Science, Education and Technology (abaixo de OSTP
FCO Field Change Order
FCO Frequency Controlled Oscillator
FCS Frame Check Sequence
FDA Food and Drug Administration (Governo americano)
FDDI Fiber Digital Data Interface
FDDI Fiber Distributed Data Interface
FDHD Floppy Drive High Density
FDIC Federal Deposit Insurance Corporation
FDIC Federal Deposit Insurance Corporation (Governo americano)
FDM Frequency Division Multiplexing
FDR Franklin Delano Roosevelt (presidente americano)
FE Field Engineer (veja também CE, SE)
FEA Finite Element Analysis
FEDSIM FEDeral Systems Integration and Management center
FEMA Federal Emergency Management Agency
FEMF Foreign EMF (q.v.) (a.k.a. Cross Battery) (Telefonia)
FEPC Fair Employment Practices Commission
FEPG Federal Engineering Planning Group (of FNC under EOWG, originally of FRICC)
FERS Federal Employees Retirement System
FET Federal Excise Tax
FET Field Effect Transistor
FFA Future Farmers of America
FFT Fast Fourier Transform
FFT Fast Fourier Transform (Espacial)
FG-A Feature Group A (Telefonia) (Line Side termination for LD carriers)
FG-B Feature Group B (Telefonia) (Trunk Side termination for LD carriers (aka ENFIA B), 950 service)
FG-D Feature Group D (Telefonia) (Trunk Side termination for LD carriers, 1+ service)
FGS Fine Guidance Sensors (em HST) (Espacial)
FHA Federal Home Administration
FHA Future Homemakers of America
FHC Fernando Henrique Cardoso (presidente brasileiro)
FIB Focused Ion Beam
FICA Federal Insurance Contributions Act
FIDO Fog Investigation Dispersal Operation
FIFO First In First Out (em registros e buffers)
FILO First In Last Out (veja também FIFO)
FIMS Forms Interface Management System
FINE FINE Is Not Emacs
FIO Frequency In and Out
FIPS Federal Information Processing Standard
FIR Far InfraRed (Espacial)
FIR Finite Impulse Response
FIRMR Federal Information Resource Management Regulation
FIT Federal Information Technologies, inc.
FITS Flexible Image Transport System (Espacial)
FIX Federal Inter-agency eXchange (Networking)
FL Florida
FLACC Full Level Algol Checkout Compiler
FLEA Four Letter Extended Acronym
FLL Fixed Loss Loop (Telefonia)
FLOP FLoating point OPeration
FLOPS FLoating-point OPerations per Second
FLRA Federal Labor Relations Authority
FM Frequency Modulation
FMB Federal Maritime Board
FMCS Federal Mediation and Conciliation Service
FMR Follow Me Roaming (Telefonia)
FMS Financial Management Service (Tesouraria) (Governo americano)
FMS Forms Management System
FNC Federal Networking Council (antigamente FRICC) (Governo americano) (abaixo de OSTP)
FO Foreign Office
FO Forward Observer
FOAC Federal Office Automation Center
FOB Free On Board
FOB Full Of Bull [TMRC]
FOC Faint Object Camera (em HST) (Espacial)
FOC Free Of Charge
FOIA Freedom Of Information Act
FOIMS Field Office Information Management System
FOIRL Fiber Optic Inter(?) Repeater(?) Link(?) [Ethernet]
FOOBAR See FUBAR (Jargão usado na Net)
FOR Free On Rail
FORCS Faa's Operational Reporting Communication System
FORD Fix Or Repair Daily [Humor]
FORD Found On Road Dead [Humor]
FORTRAN FORmula TRANslator
FOS Faint Object Spectrograph (em HST) (Espacial)
FOSE Federal Office Systems Exposition
FOT Fiber Optic Transceiver [Ethernet]
FOT Free On Truck
FOV Field Of View
FPA Floating Point Accelerator
FPC Fish Protein Concentrate
FPE Floating Point Engine
FPHA Federal Public Housing Authority
FPLA Field Programmable Logic Array (veja também PLA)
FPM Feet Per Minute
FPO Field Post Office
FPO Fleet Post Office
fps Feet Per Second
FPU Floating Point Unit
FQDN Fully Qualified Domain Name [TCP/IP] (DNS)
FR Frame Relay [Telefonia, Networking]
FRACTAL FRACTional dimensionAL
FRED Fred Resembles Emacs Deliberately
FRG Federal Republic of Germany (Oeste Alemão)
FRICC Federal Research Internet Coordinating Committee (agora FNC, q.v.) [Networking, Governo americano)
FROG Free Rocket Over Ground
FRPG Fantasy Role Playing Game
FRS Federal Reserve System
FS Field Service
FS File System
FS Full Standard
FSF Free Software Foundation
FSK Frequency Shift Keying
FSLIC Federal Savings and Loan Insurance Corporation
FSS Federal Supply Service
FSW Forward Swept Wings
Ft Foot
FTAM File Transfer And Management (ISO upscale FTP)
FTC Federal Trade Commission
FTL Faster Than Light
FTP File Transfer Protocol (transferência de arquivos na Internet)
FTS Federal Telecommunications System [Telefonia, Governo americano)
FTS Flight Telerobotic Servicer (Espacial)
FUBAR F***ed Up Beyond All Recognition/Repair
FUBAR Fouled Up Beyond All Recognition/Repair
FUSE Far Ultraviolet Spectroscopic Explorer (Espacial)
FW Fringeworthy
FWD Front Wheel Drive
FWHM Full Width at Half Maximum (Espacial)
FX Foriegn eXchange (Telefonia)
FY Fiscal Year
FYI For Your Information
® Pesquisa RXA