| LSR | Label Switch Router 
| Others |
| LSR | Label Switching Router
| Others |
| LSR | Laboratory of Sensorimotor Research
| Others |
| LSR | Lada Sport Rosneft
| Others |
| LSR | Lady Sport Riders
| Others |
| LSR | Laguna Seca Racetrack
| Others |
| LSR | Laguna Seca Raceway
| Others |
| LSR | Land and Sea Research
| Others |
| LSR | Land Speed Racing
| Others |
| LSR | Land Speed Record
| Others |
| LSR | Land/Sea Rescue
| Others |
| LSR | Landing Ship, Rocket
| Others |
| LSR | Landscape Scale Restoration
| Others |
| LSR | Last Sender Report
| Others |
| LSR | Latching Switch Relay
| Others |
| LSR | Late Successional Reserve
| Others |
| LSR | Late Successional Reserves
| Others |
| LSR | Launch Site Recovery
| Others |
| LSR | Launch Support Room
| Others |
| LSR | Leadership Succession and Renewal
| Others |
| LSR | Leaf Spring Rear
| Others |
| LSR | Leeds Student Radio
| Others |
| LSR | Legal Scholarship Repository
| Others |
| LSR | Legal Street Racing
| Others |
| LSR | Legislative Service Requests
| Others |
| LSR | li3 Standard Recommendation
| Others |
| LSR | Life Saving Rule
| Others |
| LSR | Life Science Research
| Others |
| LSR | Life Sign Reading
| Others |
| LSR | Lifering Secular Recovery
| Others |
| LSR | Light Source Representation
| Others |
| LSR | Light Speed Roadster
| Others |
| LSR | Light Straight Run
| Others |
| LSR | Limited Specific and Regular
| Others |
| LSR | Lindsey Star Roman
| Others |
| LSR | Line Status Register
| Others |
| LSR | Linear Spatial Reference
| Others |
| LSR | Link State Routing
| Others |
| LSR | Linn Steiner Roundaway
| Others |
| LSR | Linux Screen Reader
| Others |
| LSR | Linux Software Review
| Others |
| LSR | Liquid Silicone Rubber
| Others |
| LSR | Liquid Snakes Remakes
| Others |
| LSR | Liquidity Safety Return
| Others |
| LSR | Listing Success Rate
| Others |
| LSR | Live Situation Report
| Others |
| LSR | Live State Recovery
| Others |
| LSR | Local Service Register
| Others |
| LSR | Local Service Registration
| Others |
| LSR | Local Service Request
| Others |
| LSR | Local Shared Resource
| Others |
| LSR | Local Standard of Rest
| Others |
| LSR | Local Storm Report
| Others |
| LSR | Local Storm Reports
| Others |
| LSR | Local Streets and Roads
| Others |
| LSR | Logic Shift Right
| Others |
| LSR | Logical Shift Right
| Others |
| LSR | Lone Star Racing
| Others |
| LSR | Lord Sitar Records
| Others |
| LSR | Lost River Airport, Lost River, Alaska USA
| Others |
| LSR | Lost Sight of Reality
| Others |
| LSR | Loud Street Racing
| Others |
| LSR | Louisiana Sugar Refining
| Others |
| LSR | Low Storage Requirement
| Others |
| LSR | Lower Susquehanna River
| Others |
| LSR | Ludicrous Speed Racer
| Others |
| LSR | Luxury Sport Runabout
| Others |