| SLs | Sable Ls 
| Others |
| SLS | Safely Limited Speed
| Others |
| SLS | Saint Lawrence Seaway Development Corporation
| Others |
| SLS | Same Language Subtitling
| Others |
| SLS | Savior of Lost Souls
| Others |
| SLS | Scalable Lossless Coding
| Others |
| SLS | Scandinavian Lumber Standard
| Others |
| SLS | School Leadership Series
| Others |
| SLS | School Library System
| Others |
| SLS | Sea Level Standard
| Others |
| SLS | Sea-Land Service
| Others |
| SLS | Second Language Studies
| Others |
| SLS | Secondary Landing Site
| Others |
| SLS | Selected List Scheme
| Others |
| SLS | Selective Laser Sintering
| Others |
| SLS | Self Levelizer Suspension
| Others |
| SLS | Self Lowering Suspension
| Others |
| SLS | Self-Levelling Suspension
| Others |
| SLS | Sequential Logic Systems
| Others |
| SLS | Service Level Specification
| Others |
| SLS | Severed Life Support
| Others |
| SLS | Seville Luxaury Sedan
| Others |
| SLS | Seville Luxury Sedan
| Others |
| SLS | Shipping List Service
| Others |
| SLS | Shipping Lists Service
| Others |
| SLS | Short Leg Splint
| Others |
| SLS | Sigma Lambda Sigma
| Others |
| SLS | Signaling Link Selection
| Others |
| SLS | Signalling Link Selection
| Others |
| SLS | Sim Lim Square
| Others |
| SLS | Single Light Source
| Others |
| SLS | Single-Level Storage
| Others |
| SLS | Site License Solution
| Others |
| SLS | Site Log Submission
| Others |
| SLS | Skylark Sport
| Others |
| SLS | Slovenska Ljudska Stranka
| Others |
| SLS | SLS Loves Sustainability
| Others |
| SLS | Smells Like Sour
| Others |
| SLS | Smoking Loud Society
| Others |
| SLS | Society of Laparoendoscopic Surgeons
| Others |
| SLS | Sodium Laurel Sulfate
| Others |
| SLS | Sodium Laureth Sulfate
| Others |
| SLS | Sodium Laurlyl Sulfate
| Others |
| SLS | Sodium Lauryl Sulfate
| Others |
| SLS | Sodium Lauryl Sulphate
| Others |
| SLS | Soft Landing System
| Others |
| SLS | Softlanding Linux System
| Others |
| SLS | Software Landings System
| Others |
| SLS | Software Licensing Services
| Others |
| SLS | Solenoid Linear Clutch Pressure Control
| Others |
| SLS | Sortie Lab Simulator
| Others |
| SLS | Space Launch System
| Others |
| SLS | Spacelab Life Sciences
| Others |
| SLS | SpaceLab Simulator
| Others |
| SLS | Special Liquidity Scheme
| Finance |
| SLS | Specialized Loan Servicing
| Others |
| SLS | Specification Lighting Sales
| Others |
| SLS | Spectrum Logistics Services
| Others |
| SLS | Speech Level Singing
| Others |
| SLS | Spoken Language Systems
| Others |
| SLS | Sport Leicht Super
| Others |
| SLS | Sport Light Super
| Others |
| SLS | Sport Luxury Sedan
| Others |
| SLS | Squadron Leadership Schools
| Others |
| SLS | Sri Lankan Standard
| Others |
| SLS | Sri Lankan Standards
| Others |
| SLS | Stagnant Loop Syndrome
| Others |
| SLS | Standard Linear Solid
| Others |
| SLS | Stanford Law School
| Others |
| SLS | Statement Level Simulator
| Others |
| SLS | Static Light Scattering
| Others |
| SLS | Steel Leaf Spring
| Others |
| SLS | Stein-Leventhal Syndrome
| Others |
| SLS | Stephenson Locomotive Society
| Others |
| SLS | Steven Lambeck Site
| Others |
| SLS | Stop Lamp Switch
| Others |
| SLS | Storage Library System
| Others |
| SLS | Straight Line Stability
| Others |
| SLS | Straight Line Stitch
| Others |
| SLS | Strained Layer Silicon
| Others |
| SLS | Street League Skateboarding
| Others |
| SLS | Strengthen Lengthen Stretch
| Others |
| SLS | StreptoLysin S
| Others |
| SLS | Structured Light Sensor
| Others |
| SLS | Student Leadership and Service
| Others |
| SLS | Student Leadership Services
| Others |
| SLS | Student Leadership Summit
| Others |
| SLS | Student Life Skills
| Others |
| SLS | Style Luxury and Service
| Others |
| SLS | Style Luxury Service
| Others |
| SLS | Summer Literary Seminars
| Others |
| SLS | Super Leicht Sport
| Others |
| SLS | Super Light and Sport
| Others |
| SLS | Super Long Stroke
| Others |
| SLS | Superb Level of Service
| Others |
| SLS | Superior Line Source
| Others |
| SLS | Supplemental Loan for Students
| Others |
| SLS | Supported Living Services
| Others |
| SLS | Surf Life-Saving
| Others |
| SLS | Surf Lifesaving
| Others |
| SLS | Svensk Licens Svetsning
| Others |
| SLS | Swedish Medical Society
| Others |
| SLS | Sweet Little Sister
| Others |
| SLS | Swinger Lifestyle
| Others |
| SLS | Swiss Light Source
| Others |
| SLS | Switch Level Simulator
| Others |
| SLS | Sydney Law School
| Others |
| SLS | Symbiosis Law School
| Others |
| SLS | System Level Solutions
| Others |