| Acronym | Definition |
|---|
| LLR | Log-Likelihood Ratio |
| LLR | Laboratoire Leprince-Ringuet (French research laboratory; National Institute of Nuclear Physics and Particle Physics) |
| LLR | Labor Licensing and Regulation |
| LLR | Lunar Laser Ranging |
| LLR | Log Likelihood Ratio |
| LLR | Link Loss Return |
| LLR | Leicester, Leicestershire and Rutland (UK) |
| LLR | Libraries and Learning Resources (various locations) |
| LLR | Logging Last Resource (software) |
| LLR | Let Love Rule (Lenny Kravitz album) |
| LLR | Lender of Last Resort (school loan program) |
| LLR | Loan Loss Reserve |
| LLR | Low Level Radiation |
| LLR | Large Lecture Room |
| LLR | Looks Like Rain (song) |
| LLR | Legal, Legislative and Regulatory (various organizations) |
| LLR | Local Linear Regression |
| LLR | Low Level Reservoir |
| LLR | Landsforeningen for Levende Rollespil (Danish: National Association for Live Roleplaying) |
| LLR | Lessons Learned Report |
| LLR | Loading Ready Run (Internet sketch comedy group) |
| LLR | Load-Limiting Resistor |
| LLR | Least Loaded Router (method) |
| LLR | Long Lost Rebels (band) |