| TT(d) | tuberculin test(ed) 
| Others |
| TTD | Tactical Terrain Data
| Others |
| TTD | Tahoe Transportation District
| Others |
| TTD | tal Temporary Disability
| Others |
| TTD | tal to Date
| Others |
| TTD | Target Transit Delay
| Others |
| TTD | Targeted Trajectory Distribution
| Others |
| TTD | Tech Tree Definition
| Others |
| TTD | Technical Task Directive
| Others |
| TTD | Technology Based Training for Drivers
| Others |
| TTD | Technology Transfer And Development
| Others |
| TTD | Technology Transfer Division
| Others |
| TTD | Technology Transfer Document
| Others |
| TTD | Temporary Text Delay
| Others |
| TTD | Temporary Total Disabiity
| Others |
| TTD | Temporary total disability
| Others |
| TTD | Temporary Transmit Delay
| Others |
| TTD | Ten Toes Down
| Others |
| TTD | Tenzan Tombstone Driver
| Others |
| TTD | The Trade Desk
| Others |
| TTD | Therapeutic Target Database
| Others |
| TTD | These Two Dudes
| Others |
| TTD | Thickened Tailings Disposal
| Others |
| TTD | Thirumala Thirupathi Devastanams
| Others |
| TTD | Through The Door
| Others |
| TTD | Tickled To Death
| Others |
| TTD | Time To Decision
| Others |
| TTD | Time to Deliver
| Others |
| TTD | Time To Destination
| Others |
| TTD | Time To Die
| Others |
| TTD | Time Travel Disorientation
| Others |
| TTD | Tirumala Tirupati Devasthanams
| Organization, Religion, Religious Sites, Temple |
| TTD | To Tokyo Dome
| Others |
| TTD | Top Thrill Dragster
| Others |
| TTD | Torpedo Tube Data
| Others |
| TTD | Torque Transfer Device
| Others |
| TTD | Total Temporary Disability
| Others |
| TTD | Total Time Delay
| Others |
| TTD | Total To Date
| Others |
| TTD | Total Travel Distance
| Others |
| TTD | Tow Truck Driver
| Others |
| TTD | Toyota Teen Driver
| Others |
| TTD | Transit-Time Distribution
| Others |
| TTD | Transport Tycoon DeLuxe
| Others |
| TTD | Transportation Trades Department
| Others |
| TTD | Transportation Travelling Distance
| Others |
| TTD | Travel Time Delay
| Others |
| TTD | Trinidad & Tobago Dollar
| Others |
| TTD | Trinidad and Tobago Dollar
| Others |
| TTD | Trinidad Tobago Dollar
| Others |
| TTD | Trinidadian Dollar
| Others |
| TTD | Troutdale, Oregon USA
| Others |
| TTD | True Time Delay
| Others |
| TTD | Turbinen Torsionsdampfer
| Others |
| TTD | Turkish Society of Toxicology
| Others |
| TTD | Twin Turbo Diesel
| Others |