GPI

GPI may refer to:
* Global Protection & Intelligence, Inc. Private Public Figure, Executive, Diplomatic protective service based in Los Angeles, California USA.
* Global Poverty Initiative, a student group at Massachusetts Institute of Technology focused on alleviating worldwide poverty that hosted the Inaugural Millennium Campus Network Conference in April 2008.
* General paresis of the insane, a now-rare neuropsychiatric disorder affecting the brain and central nervous system
* Genuine Progress Indicator, a concept economics that has been suggested as a replacement metric for gross domestic product
* Glacier Park International Airport, a public airport serving Flathead County, Montana
* Glass Packaging Institute, a trade association for the U.S. glass container industry
* Global Partnership Initiative, an initiative of the United Nations Human Settlement Programme (UN-HABITAT).
* Global Peace Index, an index for the relative position of nations’ and regions’ peacefulness
* Glucose phosphate isomerase, an enzyme
* Glycophosphatidylinositol, a glycolipid that can be attached to the C-terminus of a protein during posttranslational modification
* General Purpose Input
* General Purpose Interface, Standard contact closure format used in broadcast level post production equipment, allowing computer based editing equipment to synchronously "start" at the same time.
* Greenfield Park International, a primary school in Greenfield Park, Quebec, Canada.
* Greenman-Pedersen, Inc., an engineering firm headquartered in Babylon, New York.
* Gurley Precision Instruments, an ISO-9001 certified U.S. manufacturing company based in Troy, New York