| Acronym | Definition |
|---|
| LSR | Label Switching Router (MPLS) |
| LSR | Local Storm Report (US NOAA) |
| LSR | Laser |
| LSR | Liquid Silicone Rubber |
| LSR | Land Speed Record |
| LSR | Local Service Request |
| LSR | Line Status Register (assembly programming) |
| LSR | Land Speed Racing (also seen as Land Racing; website) |
| LSR | Local Standard of Rest |
| LSR | Late-Successional Reserves (forestry) |
| LSR | Life Science Research |
| LSR | Loan Status Report (real estate transaction) |
| LSR | Least-Squares Regression (statistics) |
| LSR | Loose Source Routing |
| LSR | Link State Request (Open Shortest Path First) |
| LSR | Local Shared Resources |
| LSR | Laboratory of Sensorimotor Research |
| LSR | LifeRing Secular Recovery (non-religious alcohol recovery group) |
| LSR | Luftschutzraum (German: Air Raid Shelter) |
| LSR | Leaf Setup Request |
| LSR | LS Research, LLC (wireless modules and design services; Cedarburg, WI) |
| LSR | Limited Service Restaurant (fast food or take out retaurants) |
| LSR | Loose Snow on Runway |
| LSR | Lunar Surface Rendezvous |
| LSR | Line Service Request |
| LSR | Launch Support Room |
| LSR | Link State Record (Fibre Channel, FSPF) |
| LSR | Light Sensitive Resistor |
| LSR | Local Sunrise |
| LSR | Locally-Suboptimum Rank (detector) |
| LSR | Load Spreading Rivet |
| LSR | Local Service Registration |
| LSR | Laboratory for Space Research |
| LSR | Launch Site Recovery |
| LSR | Light Sensitive Relay |
| LSR | Landscape Suitability Ranking |
| LSR | Leadership Strength Readiness |
| LSR | Libre Service Royal (RBC Royal Bank ATM) |
| LSR | Linear Statistical Regression |
| LSR | Large Ship Reactor |
| LSR | Leelanau Scenic Railroad |
| LSR | Launch Signal Responder |
| LSR | Life-Stress Relationship |
| LSR | Lynchburg Source Reactor |
| LSR | Lightguide Shelf Ribbon (AT&T) |
| LSR | Local Skin Response |
| LSR | Laser Spot Receiver |
| LSR | Logistics Status Review |
| LSR | Linear Seal Ring |
| LSR | Level Status Register |
| LSR | Load Storage Register |
| LSR | Line-Source Radiation |
| LSR | Load Shifting Register |
| LSR | Level of System Robustness |
| LSR | Logistics Support Requirement/Representative |
| LSR | Lunar Surface Return Carrier |
| LSR | Loss Severity Rate |
| LSR | Logistics Support Request (US DoD) |
| LSR | Launch Support Requirement |
| LSR | Local Sales Representative (various companies) |
| LSR | Lump Sum Retirement |
| LSR | Local, State and Regional (various organizations) |