| Acronym | Definition |
|---|
| TSD | Thread-Specific Data |
| TSD | Technical Support Document |
| TSD | Tang Soo Do (martial arts) |
| TSD | Tay Sachs Disease |
| TSD | Treatment, Storage, or Disposal |
| TSD | Texas School for the Deaf |
| TSD | Technical Services Division |
| TSD | Temperature-Dependent Sex Determination |
| TSD | Thailand Securities Depository Co., Ltd. (Bangkok, Thailand; est. 1994) |
| TSD | Tennessee School for the Deaf |
| TSD | Technology Services Division |
| TSD | Technical Support Department |
| TSD | Traffic Situation Display (air traffic control) |
| TSD | Transportation Safeguards Division |
| TSD | Training Support Division |
| TSD | Tactical Situation Display |
| TSD | Total System Design |
| TSD | Tivoli Service Desk |
| TSD | Type Specific Driver |
| TSD | Trust for Sustainable Development (British Columbia) |
| TSD | Tables sur Disquette (French: Tables on Diskette; Canada Pension Plan) |
| TSD | Technical System Design |
| TSD | Tell-Show-Do (communication method) |
| TSD | The Starship Destiny (comic) |
| TSD | Telecommunications & Systems Division (Philips International) |
| TSD | Test Start Date |
| TSD | Training Systems Development |
| TSD | TechShot Digital (India) |
| TSD | Technical Specification Document |
| TSD | Thru-Short-Delay |
| TSD | Theatre Studies & Drama |
| TSD | Treater, Storer, Disposer (EPA) |
| TSD | Traffic Speed Deflectometer (Greenwood Engineering) |
| TSD | Touch-Sensitive Display |
| TSD | Through-Short-Delay |
| TSD | Tactical Surveillance Demonstration |
| TSD | Tamino Schema Definition (XML schema) |
| TSD | Transmit Selection Diversity |
| TSD | To-Shin Do (Japanese/American martial art) |
| TSD | Tri-State Delivery, Inc. |
| TSD | Training Simulation Division |
| TSD | Team Start Date |
| TSD | Technical Service Description |
| TSD | The Shining Darkness |
| TSD | Technical Scope Document |
| TSD | Tomb Sweeping Day (Qing Ming Jie) |
| TSD | That Sounds Dirty |
| TSD | Tactical Support Demonstration |
| TSD | Theater Shipping Document |
| TSD | Transmission Systems Directorate |
| TSD | Tactical Support Division |
| TSD | Trailer Suction Dredger |
| TSD | Total Stopping Distance |
| TSD | Two-Step Diagnosis |
| TSD | Threats Support Division |
| TSD | Terminal Software Development |
| TSD | Tentative Ship Date |
| TSD | Technology Solutions Division (SYNNEX Corp.) |
| TSD | Technical Services Department (various organizations) |
| TSD | Tacoma School District (Tacoma, WA) |