WSI
# WSI

The acronym WSI may refer to:

* Wafer-scale integration, a technique for building large integrated circuits
* Wall Street Institute, the former name of Wall Street English, an English language education company
* Walter Schottky Institute, a research center at the Technical University of Munich
* Water Safety Instructor, a person qualified to teach swimming lessons
* Weather Services International, a sister company to The Weather Channel, specializing in weather data and software
* Weather Stress Index, a relative measure of weather conditions
* Web Services Interoperability, Organization (WS-I), computer industry consortium
* Western Sydney Airport – the IATA code of this under-construction airport in Sydney
* Western Sydney Institute of TAFE, college institute in New South Wales
* Winter Soldier Investigation, inquiry into war crimes resulting from United States policies in the Vietnam War
* Wojskowe Służby Informacyjne, Poland's former military intelligence services
* World Security Institute, think-tank for independent research and journalism on global affairs
* World Sindhi Institute, a human rights organization based in Washington, D.C., United States
* Wrimare School Inc., a private school in Obando, Bulacan, Philippines
* Written Scheme of Investigation, a document outlining a property developer's obligation to conduct archaeological research in England's planning system
* Whole Slide Imaging, refers to scanning a complete microscope slide and creating a single high-resolution digital file.
