FTL may stand for:
Science and technology
- Faster-than-light communication and travel
- Ferritin light chain, encoded by the FTL gene
- Flash Translation Layer
- Foot-lambert ft-L, a measure of luminance
- Olympus FTL, a camera
- FreeMarker template language
Games
- Faster Than Light (software publisher), a British video game publisher
- FTL: Faster Than Light, a video game
- FTL Games, an American video game developer
Other uses
- Fort Lauderdale, Florida, United States
- Fort Lauderdale station, Amtrak code FTL
- Freedom to Learn, in Michigan, United States
- Fruit of the Loom, an American clothing manufacturer
- Full truck load