| Acronym | Definition |
|---|
| TSP | Teaspoon |
| TSP | Thrift Savings Plan |
| TSP | 3-(Trimethylsilyl)-Propionic-2,2,3,3-D4 Acid |
| TSP | Traveling Salesman Problem |
| TSP | Trisodium Phosphate (cleaner) |
| TSP | Total Suspended Particulates |
| TSP | Transportation System Plan |
| TSP | Tropical Spastic Paraparesis (complication of human T-lymphotropic viral infection) |
| TSP | Total Suspended Particles |
| TSP | Triple Superphosphate |
| TSP | Training Support Package |
| TSP | Transportation Service Provider |
| TSP | Tribal Sub-Plan (India) |
| TSP | Texas Star Party (Texas astronomy group) |
| TSP | Touch-Screen Panel |
| TSP | Traffic Signal Priority |
| TSP | Trailer Stability Program (Vauxhall) |
| TSP | Time Series Processor (statistical analysis) |
| TSP | Time Synchronization Protocol |
| TSP | Temperature-Sensitive Paint |
| TSP | Transmission Service Provider |
| TSP | Total Service Provider |
| TSP | Titanium Sublimation Pump |
| TSP | TOE Security Policy |
| TSP | Total Static Pressure |
| TSP | Trusted Service Provider (Microsoft) |
| TSP | Traffic Service Position |
| TSP | Talented Student Program |
| TSP | Trust Service Provider (Internet commerce) |
| TSP | Topical Skin Protectant |
| TSP | Twisted Shielded Pair |
| TSP | Tautas Saskanas Partija (Latvian: People's Harmony Party) |
| TSP | Transmit Signal Processor (software defined radio) |
| TSP | TRICARE Senior Prime (US DoD managed healthcare program) |
| TSP | Teleprocessing Services Program |
| TSP | Typical Selling Price |
| TSP | Total Sediment Potential (fuel oil) |
| TSP | Tag-Switched Path (Cisco) |
| TSP | The Signal Page (railway website) |
| TSP | Texas Screw Products (Houston, TX; est. 1938) |
| TSP | Time Sensitive Plan |
| TSP | Topology State Packet (Cisco) |
| TSP | Training Support Plan |
| TSP | Time Sensitive Planning |
| TSP | Theater Security Package |
| TSP | Turkish Society for Parasitology |
| TSP | Troop Structure Program |
| TSP | Triple Scalar Product |
| TSP | Tellsomeone Project (Australia) |
| TSP | Tributary Signal Processor |
| TSP | Thrift Store Prospecting (gold recycling) |
| TSP | Threat Support Package |
| TSP | Torpedo Setting Panel (US Navy) |
| TSP | Treatability Study Plan |
| TSP | Tennessee State Patrol |
| TSP | Tele-Surveys Plus, Inc. (est. 1990) |
| TSP | Torrential Sound Pour (band) |
| TSP | Target Sales Price |
| TSP | Threat Support Plan |
| TSP | Turret, Stabilized Platform (US Navy) |
| TSP | Token Scheduling Protocol |
| TSP | Track Segment Purity |
| TSP | Training Section Procedure |
| TSP | Total Skill Points |
| TSP | Trinity Security Procedures |
| TSP | The Sith Project |
| TSP | Timely Spares Provisioning |
| TSP | Telephone Support Project |
| TSP | Télé-Sondages Plus, Inc. (French: Tele-Surveys Plus, Inc.) |
| TSP | Team Subaru Pernois (Pernois, France) |
| TSP | Trailer-Stabilization-Program (trademark of Johannes Gubernath) |
| TSP | Tenant Security Plan (information security; various organizations) |
| TSP | Telecom Server Platform (Ericsson) |
| TSP | Technical Support Professional |
| TSP | Total Security Protection (various organizations) |
| TSP | Teacher Scholarship Program |
| TSP | Turku Science Park (Turku, Finland) |
| TSP | Telemetry Service Provider |
| TSP | The Sentencing Project |
| TSP | The Smashing Pumpkins (band) |
| TSP | The Small Print (Muse song) |
| TSP | Tobacco Smoke Pollution |
| TSP | Talent Search Program (various locations) |
| TSP | Telephony Service Provider |
| TSP | Top Secret Project |
| TSP | The Sport Psychologist (journal) |
| TSP | Technical Service Provider (USDA) |
| TSP | Teva Specialty Pharmaceuticals |
| TSP | Time Series Plot |
| TSP | The September Project (various organizations) |
| TSP | Traffic Safety Program (various locations) |
| TSP | Territory Senior Partner (PricewaterhouseCoopers) |
| TSP | Tjedan Suvremenog Plesa (Croatian: Week of Contemporary Dance) |
| TSP | Telecommunication Service Provider |
| TSP | Terrorist Surveillance Program |
| TSP | Test Support Package |
| TSP | Technical Support Package |
| TSP | Technical Support Provider |
| TSP | Telecom Simulation Platform (Teltone) |
| TSP | Telecommunication Services Portal (DTI Networks) |
| TSP | Telecommunications Service Priority |
| TSP | Team Software Process (software development method developed by SEI) |
| TSP | Telematics Service Provider |
| TSP | Textured Soy Protein |