| Acronym | Definition |
|---|
| FLI | Flick (Motion Video Format) |
| FLI | Fatty Liver Index (medicine) |
| FLI | Français Langue d'Intégration (French: French Language Integration) |
| FLI | Front Line Infantry |
| FLI | Fritz Lipmann Institute (Germany) |
| FLI | Fos-Like Immunoreactivity (neuroscience) |
| FLI | Font Library |
| FLI | First Light Imager |
| FLI | Foreign Language Interface |
| FLI | Forward-Looking Information |
| FLI | Friedrich Loeffler Institute (animal health; Germany) |
| FLI | France Life Imaging (France) |
| FLI | French Language Institute (France) |
| FLI | Foreign Language Institute |
| FLI | Flexible Line Interpretation (graphics format on 8-bit computers) |
| FLI | Fluid Level Indicator (engines/transmissions) |
| FLI | Fluorescence Line Imager |
| FLI | Atlantic Airways Faroe Islands (ICAO code) |
| FLI | Force Level Information |
| FLI | Fatherhood Leadership Initiative (Conshohocken, PA) |
| FLI | Fuel Level Indicator |
| FLI | Federation of Lasallian Institutions |