| Acronym | Definition |
|---|
| LRS | Library Research Service |
| LRS | Lietuvos Respublikos Seimas (Lithuanian: Lithuanian Parliament) |
| LRS | Lese Rechtschreib Schwaeche (German: Reading Spelling Weakness) |
| LRS | Lawyer Referral Service (Ontario) |
| LRS | Logistics Readiness Squadron (USAF) |
| LRS | Long Range Surveillance |
| LRS | Learning Record Store (data store) |
| LRS | Laser Raman Spectroscopy (semiconductors) |
| LRS | Low Resolution Spectra |
| LRS | Langer Radstand |
| LRS | Language Resource File |
| LRS | Language Resource (File Name Extension) |
| LRS | Little Red Schoolhouse (various locations) |
| LRS | Linear Referencing System (transportation engineering) |
| LRS | Light Rail System (various locations) |
| LRS | Linear Regression Slope (algorithm) |
| LRS | Lloyd's Register of Shipping |
| LRS | Low Ratio Suspension (bicycles) |
| LRS | Leader Replacement System (California Department of Health Care Services) |
| LRS | Last Resort Service |
| LRS | Lactated Ringer's Solution |
| LRS | Lower Respiratory Symptom |
| LRS | Licensing and Registration System (fishing regulation) |
| LRS | Lifetime Reproductive Success |
| LRS | Laboratory for Reactor Physics and Systems Behaviour (Switzerland) |
| LRS | Little Red Spot (feature of Jupiter) |
| LRS | Land Resource Science (University of Guelph; Canada) |
| LRS | Learning Resource Services (libraries, media centers, computer centers) |
| LRS | Long-Range Search |
| LRS | Line Repeater Station |
| LRS | Liquids-Rich Shale (energy production) |
| LRS | Linear Recursive Sequence |
| LRS | Leros, Greece - Leros (Airport Code) |
| LRS | Laurinburg & Southern Railroad |
| LRS | Lady Raven Stables LLC (Spokane, WA horse ranch) |
| LRS | Lead Retrieval System (software) |
| LRS | Lockton Risk Services (insurance; Lockton Companies) |
| LRS | Laser Rangefinding Scope (rifle) |
| LRS | Lunar Republic Society |
| LRS | Littoral Remote Sensing |
| LRS | Launch and Recovery System |
| LRS | Lobbyists Registration System (Canada) |
| LRS | Learner Response System (training course; Promethean Planet) |
| LRS | Low-Resistivity Silicon |
| LRS | Lake Reporting Service |
| LRS | Longest Repeating Sequence |
| LRS | Laser Reflectance Spectrometer |
| LRS | Laser Raman Scattering |
| LRS | Laboratory for Reliable Software |
| LRS | Leafy Reduced Stature (botany) |
| LRS | Low Resolution Scenario |
| LRS | Literature Reviewing Service |
| LRS | Latvijas Rakstnieku Savieniba (Writers' Union of Latvia) |
| LRS | Link Reinforcement Set for MGB |