| Acronym | Definition |
|---|
| TPI➣Teeth Per Inch |
| TPI➣Titleist Performance Institute (golf) |
| TPI➣Treads per Inch (tires) |
| TPI➣Tuned Port Injection |
| TPI➣Threads Per Inch |
| TPI➣Third Party Insurance |
| TPI➣Tribunal Pénal International (French: International Criminal Tribunal; Netherlands) |
| TPI➣Tracks Per Inch |
| TPI➣Travel Planners International (Maitland, FL) |
| TPI➣Transport Information Item |
| TPI➣Travel Professionals International (Canada) |
| TPI➣Transpacific Industries Group Ltd. (Australia) |
| TPI➣Truss Plate Institute |
| TPI➣Test Process Improvement |
| TPI➣Third Party Interface (software) |
| TPI➣Total Personal Income |
| TPI➣Turkish Patent Institute (Turkey) |
| TPI➣Turfgrass Producers International |
| TPI➣Third-Party Inspection |
| TPI➣Tillotson-Pearson, Inc. (now TPI Composites) |
| TPI➣Trigger Point Injection |
| TPI➣Thermoplastic Polyimide |
| TPI➣Tribunale Penale Internazionale (International Court of Justice, The Netherlands) |
| TPI➣Timber Products Inspection (Conyers, GA; est. 1969) |
| TPI➣Turning Point, Inc. (Safety Harbor, FL) |
| TPI➣Turns Per Inch (machining and welding) |
| TPI➣Target Position Indicator (US Navy) |
| TPI➣Twisted Pair Interface (electronic components) |
| TPI➣Third-Party Intermediaries |
| TPI➣Tender Price Index |
| TPI➣Total Positive Income |
| TPI➣Two Person Integrity |
| TPI➣Théatre de la Photographie et de l'Image (French: Theater of Photography and Image) |
| TPI➣Titre au Porteur Identifiable (French: Identifiable Title Bearer; finance) |
| TPI➣Tons Per Inch Immersion |
| TPI➣Technology Partnership Initiative (UK) |
| TPI➣Tap Position Indicator (EMCO; electronics) |
| TPI➣Team Première Infanterie (French: Team First Infantry; online gaming clan) |
| TPI➣Terminal Phase Initiation |
| TPI➣Transistorized Pointless Ignition (motorcycles) |
| TPI➣Tsutsunaka Plastic Industry (Japan) |
| TPI➣Technical Proposal Instructions |
| TPI➣Test Program Instruction |
| TPI➣Trading Partner Interchange (e-business software) |
| TPI➣Telecom Plus International |
| TPI➣Throttle Position Indicator (automobile electronic sensor) |
| TPI➣Time-Provider Interface |
| TPI➣Total Performance Indicator |
| TPI➣Tableau Pédagogique Interactif (French: Interactive Learning Table) |
| TPI➣Technical Points of Interest |
| TPI➣Technology Policy International |
| TPI➣Telecom Performance Index |
| TPI➣Tail-Plane Incidence |
| TPI➣Tanzania Pharmaceutical Industry Ltd |
| TPI➣Tradepoint International (World Trade and Industry Organization) |
| TPI➣Telemarketing Professionals, Inc. |
| TPI➣Transportability Problem Item |
| TPI➣Tilted Plate Interceptor (separates oil from contaminated water - oil refineries) |
| TPI➣Temporary Program of Instruction |
| TPI➣Test Planning Integration |
| TPI➣Technical/Technician Proficiency Inspection |
| TPI➣TRADOC Procurement Instruction |
| TPI➣Transport Service Programmers Interface |