| Acronym | Definition |
|---|
| TDSS | Timiskaming District Secondary School (New Liskeard, ON, Canada) |
| TDSS | Tactical Decision Support System (formerly Contact Management System) |
| TDSS | Television Data Systems Subcommittee |
| TDSS | TRADOC Decision Support System |
| TDSS | Time-Division Space Switch |
| TDSS | Telemetry Data Signal Simulator |
| TDSS | Training Devices, Simulators and Simulations |
| TDSS | Technical Data Storage System |
| TDSS | Traffic Data Studies System |
| TDSS | Tactical Data Simulator System |
| TDSS | Ten Dimension Super Symmetry |
| TDSS | Theater Decision Support System |
| TDSS | Technology, Development, and Support Services |
| TDSS | Thermally-Dried Sewage Sludge |