| Acronym | Definition |
|---|
| TCSS | Texas Council for the Social Studies |
| TCSS | Talk Cock Sing Song (talking nonsense, Singapore) |
| TCSS | Tucson Cactus & Succulent Society |
| TCSS | Trend Micro Certified Sales Specialist (software; Trend Micro) |
| TCSS | Tuscaloosa County School System (Alabama) |
| TCSS | Tennessee Council for the Social Studies |
| TCSS | Traffic Control and Surveillance Systems |
| TCSS | Trinity College Science Society |
| TCSS | Tasmanian Collie & Shetland Sheepdog club |
| TCSS | The Center for Student Success |
| TCSS | Transfer Case Speed Sensor |
| TCSS | Transfer Credit Summary System |
| TCSS | Tri-Cities Sportsmen Show |
| TCSS | Troup County School System (LaGrange, GA) |
| TCSS | Technical Consulting System Support |
| TCSS | Telecommunications Systems Standards |
| TCSS | Total Care Staffing Services. LLC. |
| TCSS | Thermal Conditions Support System |
| TCSS | Taiwan Chinese Student Society |
| TCSS | Timer Count Source Set (register) |
| TCSS | Total Correctional Software Suite (Integrator) |
| TCSS | Transient Crew Security System |
| TCSS | Traffic Capture Subsystem |
| TCSS | Two-Chamber Space Suit |
| TCSS | Total Computing Solutions & Services |
| TCSS | Test Case Selection Strategy |
| TCSS | Torpedo Control System, Submarine (British) |
| TCSS | Telecommunications Service System |
| TCSS | Time-table Creation Support System |
| TCSS | Two-Component Single-Step |
| TCSS | Training Consultation Style Survey |
| TCSS | Teach the Children of Southern Sudan |
| TCSS | TradeCard Settlement Services, LLC |
| TCSS | Text Covering with Strings Subset (algorithm) |
| TCSS | Technical Communication: Situations and Strategies (course) |
| TCSS | Tactical Control Surveillance System |
| TCSS | Techni-Core Network Services |
| TCSS | Translation, Confinement & Sustainment Studies |
| TCSS | Triple Cities Soaring Society |
| TCSS | Total Communications Systems & Solutions, Inc. |
| TCSS | The CyberSeekers Society |
| TCSS | Thomson-CSF Semiconducteurs Specifiques SA (Paris, France) |
| TCSS | Traffic Control Switching Set |
| TCSS | Tokyo Counseling Support Services |
| TCSS | Technical Committee on Structural Shape |
| TCSS | Telfair County School System |
| TCSS | Total Control Security and Call Accounting Server |
| TCSS | Target Chamber Service System |
| TCSS | Tri-County Service Source, LLC |
| TCSS | Titan Cyber & Software Solutions (est. 1996) |