PE
PE may refer to:

Science and technology

Computing and telecommunication
 Phase encoding, another name for Manchester code
 Portable Executable, a computer file format
 Windows Preinstallation Environment, a lightweight version of Microsoft Windows
 Progressive enhancement, a strategy for web design
 Protocol encryption, a feature of some peer-to-peer file-sharing clients
 Provider edge router, a router between computer networks
 Project Euler, a problem solving website

Medical conditions
 Pectus excavatum, a structural deformity of the anterior thoracic wall in which the sternum and rib cage are shaped abnormally
 Pleural effusion, excess fluid accumulation in the pleural cavity, the fluid-filled space surrounding the lungs
 Pre-eclampsia, a disorder of pregnancy
 Premature ejaculation
 Pulmonary embolism, a blockage of the pulmonary artery

Medical interventions
 Penis enlargement
 Phenylephrine, a common over-the-counter decongestant
 Phenytoin equivalent, used to measure doses of fosphenytoin
 Physical exercise
 Prolonged exposure therapy, a form of behavior therapy designed to treat posttraumatic stress disorder

Organic chemistry
 Pentaerythritol, a polyol
 Phenylephrine, a common over-the-counter decongestant
 Phenytoin equivalent, used to measure doses of fosphenytoin
 Phosphatidyl ethanolamine
 Phycoerythrin, a water-soluble protein used as a fluorescent marker in microscopy and flow cytometry
 Polyethylene, a common plastic polymer

Physics
 Positron emission, a type of radioactive decay
 Potential energy, the energy stored in a body or in a system due to its position in a force field or due to its configuration
 Proton emission, a type of radioactive decay
 Protective earth, a type of electrical protective system
 Reduction potential, the negative logarithm of electron activity

Other uses in science and technology
 AEG PE, a German World War I armored ground-attack aircraft
 Population equivalent, a concept used in sanitary engineering
 Present Era, a year numbering system commonly used in archaeology that uses 1950s as the epoch marker
 Professional Engineer, a post-nominal suffix indicating such a certification
 Primary energy, an energy form found in nature that has not been subjected to any human engineered conversion process

Arts and media
 Parasite Eve (video game), on the original PlayStation
 Pineapple Express (film), a 2008 American action-comedy film starring Seth Rogen
 Power electronics (music), a type of noise music
 The Press-Enterprise, a newspaper serving the Inland Empire in Southern California
 Private eye, a character class in the MMORPG Neocron
 Public Enemy (group), a hip hop group from Long Island, New York
 Minecraft: Pocket Edition, the mobile version of the game

In business and economics
 P/E ratio, or price-to-earnings ratio
 Performance Evaluation, a journal
 Professional Engineer, a post-nominal suffix indicating such a certification
 Private equity, equity investments in companies that are not traded on a public stock exchange
 Permanent establishment, a fixed place of business establishing taxable presence of a business in a host country

Businesses and organizations
 Air Europe Italy (IATA Code 1989-2008)
 People Express Airlines (1980s) (IATA Code 1981-1987) 
 Pacific Electric, a defunct Los Angeles rail transit company
 PerkinElmer, an American technology company 
 Army Police (Brazil), (Portuguese: Polícia do Exército) a Brazilian Army Police force
 Army Police (Portugal), (Portuguese: Polícia do Exército) a Portuguese Army Police force

Places
 PE postcode area, UK, covering Peterborough
 Pernambuco, a state of Brazil
 Peru (ISO 3166-1 alpha-2 and NATO country code PE)
 Port Elizabeth, a city in South Africa
 Prince Edward Island, a Canadian province

Other uses
 Pakistani English, the variant of English language spoken in Pakistan
 Physical education
 Princess Elizabeth Challenge Cup, a rowing event at Henley Royal Regatta

See also
Pe (disambiguation)
Pee (disambiguation)