Pei

PEI or Pei may refer to:

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 Equity International, a financial magazine
 * Private Education Institution (Singapore)
 * Shar Pei, a wrinkled dog breed
 * Pie
 * Pee (disambiguation)