EPI

• Epigraph (mathematics)
• Epimorphism
• Entropy power inequality, a result that relates to so-called "entropy power" of random variables
• Extreme physical information, a principle in information theory

• Echo-planar imaging
• Epidemiology
• Epinephrine, a neurotransmitter
• Epinephrine (medication)
• Epi-pen
• Exocrine pancreatic insufficiency, the inability to properly digest food due to a lack of digestive enzymes made by the pancreas
• Expanded Program on Immunization, a World Health Organization program

• Epidendrum, an orchid genus
• Epiphyllum hybrid, a cactus hybrid

• Episerver, a global e-commerce company
• Epitaxy, a semiconductor fabrication technique
• European Processor Initiative, a European project to build new low-power processors

• Eletrophotonic imaging, an imaging technique
• Epimer, one of a pair of diastereomers

• Epi (island), in Vanuatu
• Portuguese India, also known as the Portuguese State of India (Portuguese: Estado Português da Índia)

• Enkhjargal Dandarvaanchig (born 1968), Mongolian musician
• Epi Taione (born 1979), Tongan rugby union footballer
• Epi, (born c. 1988), anonymous British artist
• Juan Antonio San Epifanio (born 1959), Spanish basketball player

• Ecology Project International, an American environmental organization
• Economic Policy Institute, an American economic think tank
• Education Policy Institute, a British education think tank
• European Patent Institute, the professional association of European patent attorneys
• European Payments Initiative, a pan-European payment system

• EF English Proficiency Index, a ranking of countries by their English skills
• Epi languages, a family of languages spoken on Epi island

• Environmental Performance Index, quantifier of the environmental effect of a state's policies
• Ends per inch, the number of warp threads per inch of woven fabric
• Ethical positioning index, an index which measures how ethically a brand is positioned
• Exploding Plastic Inevitable, a series of multimedia events by Andy Warhol

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