| Acronym | Definition |
|---|
| LLI➣Low-Level Indicator (medical alarm system) |
| LLI➣Local Level Institutions (World Bank study) |
| LLI➣Local Lorentz Invariance (physics) |
| LLI➣Logical Link Identifier |
| LLI➣Low Latency Interface (mobile devices) |
| LLI➣London Language Institute (London, Ontario, Canada) |
| LLI➣Liberty League International (Scottsdale, Arizona) |
| LLI➣Library Leadership Institute (various locations) |
| LLI➣Lower Layer Interface |
| LLI➣Lifelong Learning Institutes |
| LLI➣Leg Length Imbalance |
| LLI➣Liberty Legal Institute (est. 1997; Arlington, VA) |
| LLI➣Lake Lanier Islands (Georgia) |
| LLI➣Little League International |
| LLI➣Limited Life Item (US NASA) |
| LLI➣Long Lead Item |
| LLI➣Laubach Literacy International |
| LLI➣Latitutde and Longitude Indicator (US Navy) |
| LLI➣Leveraged Loan Index (finance) |
| LLI➣Low Latent Inhibition |
| LLI➣Lower Layer Information |
| LLI➣Logical Link Interface |
| LLI➣Link Layer Interface |
| LLI➣Low-Level Injection |
| LLI➣Low Level Intercept |
| LLI➣Low-Level Intrusion |
| LLI➣Language, Literature, Identity (Conference) |