| Acronym | Definition |
|---|
| FLR | Floor |
| FLR | Federal Law Reports (Australia) |
| FLR | Fat Loss Revealed (weight loss system) |
| FLR | Florence, Italy (Airport Code) |
| FLR | Family Law Rules (court procedure) |
| FLR | Filter, Lubricator, Regulator (various companies) |
| FLR | Family Life Radio (Christian radio; Tucson, AZ) |
| FLR | Flare |
| FLR | Field Line Resonance |
| FLR | Fixed Length Record |
| FLR | Finger Lickin' Records (UK) |
| FLR | Florida Lambda Rail |
| FLR | Forward-Looking Radar |
| FLR | Forest Land Reserve |
| FLR | Flexiblelom Rack |
| FLR | Front des Lesbiennes Radicales (French: Radical Lesbian Front) |
| FLR | Female Led Relationship |
| FLR | First Level Resolution |
| FLR | Finite Larmour Radius (plasma physics) |
| FLR | Force of Lower Readiness |
| FLR | Flight Line Reference |
| FLR | Fairly Large Rock (astronomy) |
| FLR | Formal Lab Report |
| FLR | Field Level Repair(able) |
| FLR | Food Labelling Regulation (UK) |