EPI

EPI is an acronym or initialism that may mean one of the following:
* Economic Policy Institute, an American thinktank organisation.
* European Patent Institute, the professional association of European patent attorneys.
* EuroProp International, manufacturer of the EPI TP400, a military turboprop engine.
* "Exploding Plastic Inevitable", Andy Warhol's series of multimedia events.
* Environmental Performance Index, a method of scaling the effects of human impact on the natural environment.
* Exocrine pancreatic insufficiency
* Expanded Programme on Immunization, an initiative of the World Health Organization.
* Echo Planar Imaging
* Extreme physical information, a concept in a theory of physics based on information
* Epinephrine
* Employment Policies Institute, group which advocates against raising the minimum wage
* Emerald Passport Inc., a direct sales company
* Ecology Project International, supporting science education and conservation
* Email, Phone, Internet, simultaneous communication across multiple channels

Epi is also
* the central flower in a wheat stalk.
* an island and a volcano on Vanuatu, see Epi (island).
* Epi, the abbreviation for the orchid genus "Epidendrum"
* a term used in medical jargon for epinephrine, a neurotransmitter which is also known as adrenaline.
** example: an Epipen for use against acute allergic reaction
* a loaf consisting of a line of eight baguette rolls.
* in category theory, some authors use the term "epi" for epimorphisms.
* In semiconductor manufacturing Epi layer refers to Epitaxial layer.
* The nickname of Juan Antonio San Epifanio, a Spanish retired Basketball player.
* a prefix given to one of an epimeric pair in chemistry
* a shortening for episode
* a prefix to phone in the guitar company Epiphone