| Acronym | Definition |
|---|
| LFI | Local File Inclusion |
| LFI | Link Fragmentation and Interleaving (Cisco) |
| LFI | Line Frame Interface |
| LFI | Link Fragmentation and Interleaving |
| LFI | Low Speed Link Features |
| LFI | Learning from Incidents (safety) |
| LFI | Lethal Force Institute |
| LFI | Local Financial Institution (various locations) |
| LFI | Leatherhead Food International (US and UK) |
| LFI | Learning for Independence (Maryland) |
| LFI | Life Force International (California) |
| LFI | Landesforstinventar (National Forest Inventory, Switzerland) |
| LFI | Long-Fiber Injection (materials science) |
| LFI | Low Flow Ischemia |
| LFI | Last File Indicator |
| LFI | League for the Fifth International |
| LFI | Limited Field Investigation |
| LFI | Live Female Infant (obstetrics) |
| LFI | Large Format Inkjet |
| LFI | Linear Frequency Invariant |
| LFI | Low Fire Interlock |
| LFI | Lawyers Fostering Independence (Seattle, WA) |
| LFI | Laserfab Incorporated |
| LFI | Low Frequency Intermodulation |
| LFI | Launch Force Inhibitor |
| LFI | Loving Friends International |