TPI stands for:

  • Theatre Institute of Pathology
  • Theological- Pedagogical Institute, see religion Pedagogical Institute
  • Institute of Theoretical Physics
  • Toxicology, pharmacology and immunology - consulting company in Germany
  • TPI ( TV channel ), a private television station in Indonesia


  • Thermoplastic polyimides
  • Triosephosphate isomerase, an enzyme of glycolysis


  • Teeth Per Inch are in the English-speaking world, the number of teeth per inch with a saw on ( the higher, the better), the indication Points Per Inch is common ( TPI 1 )
  • Test Process Improvement, maturity model to test evaluation and optimization
  • Threads per inch - a measure of the density of the carcass of a tire, see the carcass (tire)
  • Tiny Programming Interface, an In-System Programming Interface Atmel
  • Tire Pressure Indicator of NIRA Dynamics, a tire pressure monitoring system
  • Tracks Per Inch. Number of (data) tracks on disk
  • Tri - port interface, a controller manufactured by MOS Technologies ( also known under the reference numbers 6523 and 6525 ).
  • True Performance Initiative. TPI is to define a new, more accurate measure of processor performance, see the processor ( hardware)
  • Tuned Port Injection. From General Motors used in the late 1980s to the early 1990s Multi Point Injection with V8 engines.


  • Tok Pisin, a language of Papua New Guinea

TPI as distinguishing signs on license plate:

  • Poland: powiat Pińczowski in the Province of Holy Cross
  • Disambiguation
  • Abbreviation