| Acronym | Definition |
|---|
| LLS | Logements Locatifs Sociaux (French: Social Rented Housing) |
| LLS | Leukemia & Lymphoma Society |
| LLS | Loyola Law School (Los Angeles, CA) |
| LLS | Late Late Show (TV) |
| LLS | Locke Liddell & Sapp (law firm) |
| LLS | Linear-Least Squares |
| LLS | Liquid Line Solenoid (valve) |
| LLS | Link Local Signaling |
| LLS | Link List Section |
| LLS | Low Level Control System |
| LLS | Launch and Landing Site (US NASA) |
| LLS | Linen & Laundry Services (cleaning) |
| LLS | Lyman Limit System |
| LLS | Language Line Services (translation company) |
| LLS | Language Learning Strategies |
| LLS | Light Louisiana Sweet (crude oil grade) |
| LLS | Leigh-Like Syndrome |
| LLS | Licensed Land Surveyor |
| LLS | Liquid Level Sensor |
| LLS | Lender Lead Solutions (mortgages) |
| LLS | Language Learning Solutions |
| LLS | LED (Light Emitting Diode) Lighting Solutions (various locations) |
| LLS | Logistics Labour Survey (Netherlands) |
| LLS | Least Loaded Server |
| LLS | Laser Line Scanner |
| LLS | Thermo Electron Life and Laboratory Sciences (India) |
| LLS | Local Line Switch |
| LLS | Low-Level Solid |
| LLS | Localized Light Scattering |
| LLS | Lower Level Switch |
| LLS | Lunar Logistic System |
| LLS | Laser Light Source |
| LLS | Learning and Life Skills (education) |
| LLS | Land Leveling System |
| LLS | Logical-Level Sharing |
| LLS | Lunar Landing Simulator |
| LLS | Laboratori de Llum de Sincrotró (Synchrotron Light Laboratory; Barcelona, Spain) |
| LLS | Lateral Line System (sensory organ in fish) |
| LLS | Low Level Support |
| LLS | Lower Limit Switch |
| LLS | Location Look-Up Support |
| LLS | Libertarian Leadership School (Libertarian National Committee) |
| LLS | Laser Leveling System |
| LLS | Large Laboratory System (LabCorp) |