| Acronym | Definition |
|---|
| TDD | Telecommunication Device for the Deaf |
| TDD | Test Driven Development (programming methodology) |
| TDD | Time Division Duplex (Wireless) |
| TDD | Test Driven Design (software development technique) |
| TDD | Training and Development Department (various organizations) |
| TDD | Time Division Duplex |
| TDD | Test Driven Development |
| TDD | Technical Design Directive |
| TDD | Telecommunication Display Device |
| TDD | Time to Deliver Data |
| TDD | Tpm Device Driver |
| TDD | Transient Data Definitions |
| TDD | Tuatha de Danaan (submarine) |
| TDD | Total Daily Dose |
| TDD | Trinidad, Bolivia (Airport Code) |
| TDD | Test Design Document (various companies) |
| TDD | Total Demand Distortion |
| TDD | Territory Development Department (Hong Kong) |
| TDD | Technical Design Document |
| TDD | Terminal Station |
| TDD | Technical Due Diligence |
| TDD | Tubular Daylighting Device (home lighting) |
| TDD | Time Definite Delivery |
| TDD | Tokyo Dance Delight (Tokyo, Japan) |
| TDD | Trade Development Division (various locations) |
| TDD | The Dog's Dead |
| TDD | Tender Due Date |
| TDD | Three Doors Down (band) |
| TDD | The Death Dealers (gaming clan) |
| TDD | Top Down Driving |
| TDD | Trick Daddy Dollar (rapper) |
| TDD | Technical Direction Document |
| TDD | Ternary Decision Diagram |
| TDD | Timing-Driven Design |
| TDD | Top-Down Decomposition |
| TDD | The December Drive (band) |
| TDD | Temporal Dependency Distance |
| TDD | Technical Description Document |
| TDD | Test Design Description |
| TDD | Technical Discussion Document |
| TDD | Tax Development District |
| TDD | Task Data Description |
| TDD | Tactical Display Device |
| TDD | Terrorist Device Defeat (US Defense Threat Reduction Agency) |
| TDD | Temporary Design Departure |
| TDD | Target DGZ Designator |
| TDD | Test Documentation Drawing |
| TDD | Technical Documents Department |
| TDD | Target Detection/Detecting Device |
| TDD | Threat Definition Document |
| TDD | Telecom Depressive Disorder (phone, fax, pager, email, no messages) :-) |
| TDD | Test Development Director |
| TDD | Truncated De-Correlating Detector |