| TT&L | Tax, Title, and License 
| Others |
| TT&L | Treasury, Tax, and Loan
| Others |
| TTL | Taiwan Tobacco and Liquor Company
| Others |
| TTL | Tal Time In Line
| Others |
| TTL | Tapeten Teppichboden Land
| Others |
| TTL | Tata Technologies Limited
| Others |
| TTL | Tax, Title, & License
| Others |
| TTL | Teaching Technology Lab
| Others |
| TTL | Technology for Teaching and Learning
| Others |
| TTL | Technololgy Transfer Layer
| Others |
| TTL | Temporary Traffic Lights
| Others |
| TTL | Tennessee Truck Lines
| Others |
| TTL | Test Technology Library
| Others |
| TTL | Text Transfer Language
| Others |
| TTL | Textile Testing Laboratory
| Others |
| TTL | Thank The Lord
| Others |
| TTL | The Transistor Logic
| Others |
| TTL | The Twenties Life
| Others |
| TTL | Though The Lens
| Others |
| TTL | Through The Lens
| Others |
| TTL | Thru The Lens
| Others |
| TTL | Tied the Leader
| Others |
| TTL | Tilt Telescoping Leather Steering Wheel
| Others |
| TTL | Time To Last
| Others |
| TTL | Time to live
| Others |
| TTL | Time To Lose
| Others |
| TTL | Time To Love
| Others |
| TTL | Tiny Template Library
| Others |
| TTL | Tips, Tricks, and Links
| Others |
| TTL | Tiptronic Turbo Look
| Others |
| TTL | Tire Testing Laboratory
| Others |
| TTL | To The Limit
| Others |
| TTL | Tom Tom Link
| Others |
| TTL | Top Ten List
| Others |
| TTL | Toronto Taxi License
| Others |
| TTL | Torpedo Tube Layer
| Others |
| TTL | Total Tech Level
| Others |
| TTL | Total Transect Length
| Others |
| TTL | Total Transported Load
| Others |
| TTL | Totally To Live
| Others |
| TTL | Trailer Tongue Load
| Others |
| TTL | Transfer Transistor Lights
| Others |
| TTL | Transistor Technology Logic
| Others |
| TTL | Transistor To Transistor Logic
| Others |
| TTL | Transistor Transformer Logic
| Others |
| TTL | Transistor Transistor Logic
| Others |
| TTL | Transistor Transitor Logic
| Others |
| TTL | Transistor-transistor logic
| Others |
| TTL | Transistor-Transistor-Logic
| Others |
| TTL | Translational Therapy Laboratory
| Others |
| TTL | Transmission transistor logic
| Others |
| TTL | Transport Trading Limited
| Others |
| TTL | Travel Time Under Load
| Others |
| TTL | Tubulin Tyrosine Ligase
| Others |
| TTL | Tubulin Tyrosine Lygase
| Others |
| TTL | Twin Trapezoidal Link
| Others |