| Acronym | Definition |
|---|
| FTS | Free to Speak |
| FTS | Fujitsu Technology Solutions (est. 1999) |
| FTS | Failure to Stop |
| FTS | Fight to Survive (gaming) |
| FTS | Fast Track Service (various organizations) |
| FTS | Fourier Transform Spectrometer |
| FTS | Full-Text Search (filename extension) |
| FTS | Full Table Scan (computing) |
| FTS | Federal Technology Service |
| FTS | Financial and Technical Support (various organizations) |
| FTS | Fast Tool Servo (system) |
| FTS | Fees for Technical Services (tax; India) |
| FTS | Fault Tolerance Service |
| FTS | Flip the Script |
| FTS | Flight Test Squadron (US Air Force) |
| FTS | Fuel Tank Safety (aviation) |
| FTS | File Transfer Support |
| FTS | Favourite Track Selection |
| FTS | File Transfer Service |
| FTS | Fast Track Server |
| FTS | Fast Track Schedule |
| FTS | File Transfer Software |
| FTS | Full Text Search |
| FTS | File Transfer System |
| FTS | Fault Tolerance Server |
| FTS | First Trimester Screening (pregnancy) |
| FTS | Fast Track Settlement |
| FTS | Fourier Transform Spectroscopy |
| FTS | Federal Tariff Service (Russia) |
| FTS | Flying Training Squadron (USAF) |
| FTS | Foundation for Tomorrow's Schools (Montana) |
| FTS | Full-Time Support |
| FTS | Flight Termination System |
| FTS | Financial Tracking System |
| FTS | Federal Telecommunications System |
| FTS | Fault Tolerant System |
| FTS | Fire Training School (various locations) |
| FTS | Force Transfer System (Mavic) |
| FTS | Flight Test System (US NASA) |
| FTS | Full Time Student |
| FTS | Federal Telecommunications Service |
| FTS | Fixing To Start |
| FTS | Fresh Tilled Soil (Waltham, MA) |
| FTS | Federal Telephone System |
| FTS | Flight Test Station |
| FTS | Foreign Tire Sales (Union, NJ) |
| FTS | Field Trial Secretary (various meanings) |
| FTS | France Transmission Service (France) |
| FTS | Foreign Trade Statistics |
| FTS | Freedom Team Salute (US Army recognition program) |
| FTS | File Tracking System |
| FTS | Federal Customs Service (Russian) |
| FTS | Faculty Technology Services (various schools) |
| FTS | Facteur Thymique Sérique (Serum Thymic Factor) |
| FTS | Fujitsu Transaction Solutions (Fujitsu Ltd.) |
| FTS | Forest Technology Systems, Ltd |
| FTS | First Tier Suburbs (National League of Cities) |
| FTS | Fiber Transport System |
| FTS | Forensic Treatment Services (Pennsylvania) |
| FTS | Fine Track Sensor (US Air Force) |
| FTS | Full-Time Status |
| FTS | Formulation et Traitement des Surfaces (French: Formulation and Treatment of Surfaces) |
| FTS | Funds Transfer Service (banking) |
| FTS | Foundation for Traffic Safety (AAA) |
| FTS | Frequency and Time Systems |
| FTS | Fight the System |
| FTS | Frequency and Timing Subsystem |
| FTS | Field Training Services |
| FTS | Facing Target Sputtering |
| FTS | Full Tank Shot (aquarium hobbyist photos) |
| FTS | Fuji Techno-Service (Japan) |
| FTS | Firearms Tracing System (ATF) |
| FTS | Fellow of the Australian Academy of Technological Sciences and Engineering |
| FTS | Fuel Temperature Sensor |
| FTS | Future Technology Systems (various locations) |
| FTS | Fuel Transfer System |
| FTS | Field Test Set |
| FTS | Field Technical Specialist (automotive) |
| FTS | Forget the System (polite form) |
| FTS | Flight Training Supplement |
| FTS | Fellow of the Tourism Society (UK) |
| FTS | Frequency Time Standard |
| FTS | Financial Transaction Switch |
| FTS | Fluid Therapy System |
| FTS | Federation Test System |
| FTS | Field Training Supervisor (law enforcement) |
| FTS | Floppy Tail Syndrome (geckos) |
| FTS | Fixed Terminal System (RR network communication) |
| FTS | First Time Sewerage (civil engineering) |
| FTS | Follow the Sun, Inc (Albuquerque, New Mexico) |
| FTS | Fleet Truck Sales (West Haven, Utah) |
| FTS | Financial Technical Services |
| FTS | Fiber Transmission System (Alcatel) |
| FTS | Film Transport Speed |
| FTS | Flight Telerobotic System |
| FTS | Field Transfer System |
| FTS | Fers Toutes Sections (Villeneuve, France) |
| FTS | Flexible Turret System |
| FTS | Formosa Travel Service |
| FTS | Flight Telerobotic Service |
| FTS | Forward Training Site |
| FTS | Field Termination Center |
| FTS | French Titanic Society |
| FTS | Forget This/That Stuff (polite form) |
| FTS | FICS Testing Server |
| FTS | Flight Termination Subsystem |
| FTS | File Transfer Service/System |
| FTS | Fiscal Transparency Seminar (IMF) |
| FTS | Fiber-Optic Test Set |
| FTS | Friendship Through Sports |
| FTS | Flying Tippler Society of the USA (est. 1987) |
| FTS | Free Trade Syndicate (gaming alliance) |
| FTS | Fuel Treatment Service |
| FTS | Foundation for Theosophical Studies (UK) |
| FTS | Flyer Training School (Royal Air Force) |
| FTS | Feature Tracking System |