{{wiktionary|pei|PEI}} '''PEI''' or '''Pei''' may refer to: {{toc right}} == Places == *Matecaña International Airport, Pereira, Colombia, IATA code PEI *Pei County (沛县), Jiangsu, China *Pei Commandery (沛郡), a commandery in Chinese history *Prince Edward Island, a province of Canada *Pei, Tibet, a town in Tibet
== People == *Bei (surname) (貝), romanized Pei in Wade–Giles *Pei (surname), a Chinese surname (裴) or an Italian surname *I. M. Pei (1917–2019), a Chinese-American architect *Mario Pei (1901–1978), an Italian-American linguist
== Polymers == *Polyetherimide (PEI), a thermoplastic similar to PEEK *Polyethylenimine (PEI), a type of water-soluble polymer
== Other uses == * Paul Ehrlich Institute, Germany * Pei language * Pe (Semitic letter) (פ), or ''pei'', a letter in the Hebrew alphabet * Princeton Environmental Institute of Princeton University * Private Education Institution (Singapore) * Shar Pei, a wrinkled dog breed * Pie * Pee (disambiguation)
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