| TSL | Taiwanese Sign Language 
| Others |
| TSL | tal Student Load
| Others |
| TSL | Talbot Sunbeam Lotus
| Others |
| TSL | Tamuin, Mexico
| Others |
| TSL | Taxes Savings And Life
| Others |
| TSL | Taxes Savings Life
| Others |
| TSL | Team Sportsmanship Liaison
| Others |
| TSL | Technical Service Letter
| Others |
| TSL | Technical Services Librarian
| Others |
| TSL | Technical Support Line
| Others |
| TSL | TechSideLine.com
| Others |
| TSL | Teen Second Life
| Others |
| TSL | Temperature Sensitive Lethal
| Others |
| TSL | Temporary Sales Licenses
| Others |
| TSL | Temporary Speed Limit
| Others |
| TSL | Tennessee State Library
| Others |
| TSL | Terminal System Language
| Others |
| TSL | Test and Set Lock
| Others |
| TSL | Test Script Language
| Others |
| TSL | Texas State Library
| Others |
| TSL | The Scarlet Letter
| Others |
| TSL | The Script Lab
| Others |
| TSL | The Sharpest Lives
| Others |
| TSL | The Shifted Librarian
| Others |
| TSL | The Simpsons Lair
| Others |
| TSL | The Sith Lords
| Others |
| TSL | The Social Life
| Others |
| TSL | The Social Lubricant
| Others |
| TSL | The Student Life
| Others |
| TSL | The Summit Lighthouse
| Others |
| TSL | Theatre Saves Lives
| Others |
| TSL | Theft Security Lock
| Others |
| TSL | Thomas Salter Limited
| Others |
| TSL | Three Stage Lug
| Others |
| TSL | Three Stage Lugs
| Others |
| TSL | Tiepermann Stores Limited
| Others |
| TSL | Time and Space Limited
| Others |
| TSL | Time Space Limited
| Others |
| TSL | Time Spent Listening
| Others |
| TSL | Togetherness Sharing and Learning
| Others |
| TSL | Top Speed Limiter
| Others |
| TSL | Toyo Shingo Lines
| Others |
| TSL | Tractor Seal
| Others |
| TSL | Transfer Sequence List
| Others |
| TSL | Transfer Support Layer
| Others |
| TSL | Transformer Specification Language
| Others |
| TSL | Transient System Load
| Others |
| TSL | Transmission Seal
| Others |
| TSL | Transport Service License
| Others |
| TSL | Transportation Science and Logistics
| Others |
| TSL | Transportation Systems Laboratory
| Others |
| TSL | Travel Speed Limiter
| Others |
| TSL | Tri-Service Laser
| Others |
| TSL | Trina Solar Limited
| Others |
| TSL | Trina Solar Ltd
| Others |
| TSL | Triple Stage Lug
| Others |
| TSL | Triple Standard Line
| Others |
| TSL | Triple Super Lead
| Others |
| TSL | Truck Service Lifts
| Others |
| TSL | TS Lines
| Others |
| TSL | Turn Signal Light
| Others |