| RSL | Mehdi Ballouchy 
| Others |
| RSL | PC Tools for Windows ReSource Library
| Others |
| RSL | Race Shop Limited
| Others |
| RSL | Racing Sport Limited
| Others |
| RSL | Radar Sensor Left
| Others |
| RSL | Radar Software Library
| Others |
| RSL | Radcliffe Science Library
| Others |
| RSL | Radiator Stop Leak
| Others |
| RSL | Radio Signaling Link
| Others |
| RSL | Radio Signalling Link
| Others |
| RSL | Radioactive Seed Localization
| Others |
| RSL | Radiological Sciences Laboratory
| Others |
| RSL | Radiological Society of Louisiana
| Others |
| RSL | RadioScaphoLunate
| Others |
| RSL | Rail Safety Law
| Others |
| RSL | Raise Specification Language
| Others |
| RSL | Rally Sport Live
| Others |
| RSL | Rambus Signaling Level
| Others |
| RSL | RAPIDS Site Locator
| Others |
| RSL | Rappahannock Swim league
| Others |
| RSL | Raw String Literal
| Others |
| RSL | Reactive Script Language
| Others |
| RSL | Read and Set Lock
| Others |
| RSL | Ready Service Locker
| Others |
| RSL | Real Salt Lake
| Others |
| RSL | Realty Services Letters
| Others |
| RSL | Rear Main Seal
| Others |
| RSL | Reason Season Lifetime
| Others |
| RSL | Received Signal Level
| Others |
| RSL | Recommended Spares List
| Others |
| RSL | Recruitment Services
| Others |
| RSL | Recurring Slope Lineae
| Others |
| RSL | Recurring Story Line
| Others |
| RSL | Red Split Lentils
| Others |
| RSL | Red Stop Lamp
| Others |
| RSL | Red Sweater Lady
| Others |
| RSL | Regional Screening Levels
| Others |
| RSL | Registered Social Landlord
| Others |
| RSL | Registry Size Limit
| Others |
| RSL | Relay Stop List
| Others |
| RSL | Remote Serial Link
| Others |
| RSL | Request and Status Link
| Others |
| RSL | Request and Status Links
| Others |
| RSL | Requirements Specification Language
| Others |
| RSL | Research Service-Learning
| Others |
| RSL | Research Status Log
| Others |
| RSL | Reserve Static Line
| Others |
| RSL | Resident Surgical Log
| Others |
| RSL | Resource Library
| Others |
| RSL | Resource Management Layer
| Others |
| RSL | Resource Specification Language
| Others |
| RSL | Resource Support List
| Others |
| RSL | Respect Survive and Loyalty
| Others |
| RSL | Restricted Service Licence
| Others |
| RSL | Restricted Service License
| Others |
| RSL | Restricted Substance List
| Others |
| RSL | Restricted Substances List
| Others |
| RSL | Restricted Substances Lists
| Others |
| RSL | Retail Stock Ledger
| Others |
| RSL | Retired Service League
| Others |
| RSL | Retired Servicemen's League
| Others |
| RSL | Return Services League
| Others |
| RSL | Returned and Services League
| Others |
| RSL | Returned and Services League (of Australia)
| Others |
| RSL | Returned Services League
| Others |
| RSL | Revolutionary Socialist League
| Others |
| RSL | Ricardo Street Locos
| Others |
| RSL | Ringer Sound Level
| Others |
| RSL | Rising Sea Level
| Others |
| RSL | Road Speed Limiter
| Others |
| RSL | Roadside Safety Library
| Others |
| RSL | Robb Stark Lives
| Others |
| RSL | Robocyte Scripting Language
| Others |
| RSL | Robot Scripting Language
| Others |
| RSL | Robotic Systems Lab
| Others |
| RSL | Rochester Systems Ltd
| Others |
| RSL | Rogue Squadron Legends
| Others |
| RSL | Roots Surname List
| Others |
| RSL | RootsWeb Surname List
| Others |
| RSL | Roxio Support Library
| Others |
| RSL | Royal Society of Literature
| Others |
| RSL | Royal Society of Literature of the United Kingdom
| Others |
| RSL | Rugby Soccer League
| Others |
| RSL | Rugby Super League
| Others |
| RSL | Runtime Shared Libraries
| Others |
| RSL | Russell Municipal Airport, Russell, Kansas USA
| Others |
| RSL | Russian State Library
| Others |
| RSL | Ryan's Smashing Life
| Others |