| Acronym | Definition |
|---|
| TLA | Three Letter Acronym |
| TLA | Three Letter Abbreviation |
| TLA | Texas Library Association |
| TLA | The Last Airbender (movie and TV series) |
| TLA | Text-Link-Ads (Internet advertising) |
| TLA | Top-Level Aggregation |
| TLA | Temporal Logic of Actions (logic system) |
| TLA | Tennessee Library Association |
| TLA | The Lost Age (game) |
| TLA | Theater of the Living Arts (Philadelphia, PA) |
| TLA | Temporary Lodging Allowance |
| TLA | Teaching, Learning and Assessment |
| TLA | Teacher Learning Academy (UK) |
| TLA | The Language Academy (Fort Lauderdale, FL) |
| TLA | Trial Lawyers Association |
| TLA | True Love Always |
| TLA | Transportation Lawyers Association |
| TLA | Total Laboratory Automation |
| TLA | Temporary Living Allowance |
| TLA | Thin Layer Activation |
| TLA | The Lawrence Arms (band) |
| TLA | Territorial Local Authorities (New Zealand) |
| TLA | Transformative Language Arts (Goddard College) |
| TLA | The Last Alliance |
| TLA | Top Level Architecture (information security defense-in-depth) |
| TLA | Timber License Agreement (Philippines) |
| TLA | Truth in Lending Act |
| TLA | Trinidad Lake Asphalt |
| TLA | Teller, Alaska (Airport Code) |
| TLA | Term Loan A |
| TLA | Three Letter Agency |
| TLA | Throttle Lever Angle |
| TLA | Top Level Assembly |
| TLA | Tournament Life Announcement (chess) |
| TLA | Two Letter Acronym (less common) |
| TLA | Top Level Aggregate |
| TLA | Training Level Assignment |
| TLA | Transluminal Angioplasty (navigating transluminally through blood vessels to perform angioplasty. |
| TLA | Terminal Lecteur Applicatif (French: Terminal Drive Application) |
| TLA | Temporary Lodging Assistance |
| TLA | Two-Location Algorithm |
| TLA | The Last Ambassadors (band) |
| TLA | Talk, Listen, Act (United Parcel Service training) |
| TLA | Telephone Line Adapter |
| TLA | Transmit Level Adjustment |
| TLA | Termination Liability Agreement |
| TLA | Toulouse Lalande-Aucamville (French rugby club) |
| TLA | True Life Anatomy Pty Ltd (software) |
| TLA | Triathlon du Lac d'Aiguebelette (French triathlon) |
| TLA | Time Line Analysis |
| TLA | Telemetry Link Adapter |
| TLA | Tenant Lease Agreement |
| TLA | Travel & Living Allowance |
| TLA | Total Living Allowance |
| TLA | Term Life Assurance |
| TLA | Teaching and Learning Assistant (education) |
| TLA | Terminal Low Altitude |
| TLA | Terminate and Leave Activated |
| TLA | Tie Line Class A (24 hours/day service) |
| TLA | Triple Letter Acronym (less common than Three Letter Acronym) |
| TLA | Techniques Loisirs Automobiles (French automobile service company) |
| TLA | Tissue-Like Assemblies |
| TLA | Theater Lead Agent (US DoD) |
| TLA | Transmitter Launch Amplitude |
| TLA | Talk-Listen-Action |
| TLA | Tamilnadu Library Association (India) |
| TLA | Top Level Alarm |
| TLA | Top-Level Administrator (computing) |
| TLA | The Latin Americanist (journal; Southeastern Council of Latin American Studies) |
| TLA | The Lost Art |
| TLA | Teaching and Learning Activities |
| TLA | Technology Licensing Agreement (contract) |
| TLA | Telstra Learning Academy (Australia) |