| Rank | Abbreviation | Meaning |
|---|
| ***** | TLSA | Tennessee Land Stewardship Association
| |
| ***** | TLSA | Tallahassee Legal Secretaries Association
| |
| ***** | TLSA | Tunable Laser Subassembly
| |
| **** | TLSA | Timberline Lodge and Ski Area
| |
| **** | TLSA | THINQ Learning Solution Alliance
| |
| **** | TLSA | Truck Lease and Service Agreement
| |
| **** | TLSA | Transparent Line Sharing Adapter
| |
| **** | TLSA | T L Switzer Associates
| |
| **** | TLSA | Tucson Legal Support Association
| |
| **** | TLSA | Timor Leste Studies Association
| |
| **** | TLSA | Teachers League of South Africa
| |
| *** | TLSA | Tunable Laser Spectrum Analyzer
| |
| *** | TLSA | Twin Lakes Soccer Association
| |
| *** | TLSA | Transmission Line Surge Arrester
| |
| ** | TLSA | Traveller Learning Support Assistant
| |
| ** | TLSA | Torso-Limb Suit Assembly
| |
| ** | TLSA | transitional lands study area
| |
| ** | TLSA | Tasmanian Learning and Skills Authority
| |
| * | TLSA | Texas Lutheran Schools Association
| |
| * | TLSA | Teshekpuk Lake Special Area
| |
| * | TLSA | Three-Layered Services Application
| |
| * | TLSA | TurboLinux Security Advisory
| |
| * | TLSA | TurboLinux Security Announcement
| |
| * | TLSA | Time Labeled Scheduling Automaton
| |
| * | TLSA | Three-Path-Communication Linear Systolic Array
| |