STI

STI may refer to:

Biology and psychology

 * Sexually transmitted infection
 * Signal transduction inhibitor, a drug type
 * Soft tissue injury
 * Symptom targeted intervention, for treating depression

Electronics and computing

 * Shallow trench isolation, prevents current leakage inside chips
 * STI (x86 instruction), enables interrupts
 * Still Image Architecture in MS Windows

Other uses in science and technology

 * Shimano Total Integration, for bicycle gears
 * Speech transmission index, a measure of speech intelligibility
 * Stationary target indication, a radar mode
 * Subaru Impreza WRX STI, car models
 * Verkehrsbetriebe STI, a bus operator, Bern, Switzerland

Educational organizations

 * Sail Training International, British non-profit, trains people on sailing ships
 * STI College, Philippine IT network

In science and technology

 * Semantic Technology Institute International, research network for semantic technology
 * Sega Technical Institute, defunct game developer
 * Subaru Tecnica International, motorsports division
 * Sony, Toshiba, and IBM, co-developers of the Cell microprocessor

Other businesses and organizations

 * Scottish Trade International (1991-2001), later Scottish Development International
 * Canadian airline Sontair, ICAO code, see List of airline codes (S)

Other uses

 * Cibao International Airport, IATA airport code
 * Stieng language (ISO 639 code: "sti") of Vietnam/Cambodia
 * Stirlingshire, historic county in Scotland, Chapman code
 * Straits Times Index, a stock market index
 * Shun Tin station, MTR station code