DE

DE, de, or dE may refer to:

Human names

 * De (surname), a Bengali family name
 * Dé (footballer, 1940–1992), Ademar José Ribeiro, Brazilian football left-back
 * Dé (footballer, born 1998), Cledson Carvalho da Silva, Brazilian football forward
 * de, a nobiliary particle

Language and linguistics

 * De (Cyrillic), a letter in the Cyrillic script
 * German language (ISO 639-1 alpha-2 code)
 * De (kana) (で, デ), a Japanese hiragana/katakana
 * de (interjection), Albanian interjection
 * de-, an English prefix denoting reversal, undoing, removing; intensifying; or from, off
 * Downward entailing, in linguistic semantics, a property of a modifier that reduces the number or degree an expression

Media and business

 * Condor (airline) (IATA code), a German airline
 * Daily Express, a British tabloid newspaper
 * Digital Extremes, a Canadian-operated computer and video game development studio
 * Douwe Egberts, a coffee brand
 * John Deere (NYSE stock ticker symbol), an American machinery manufacturer

Military

 * Defence Estates, an agency of the UK Ministry of Defence
 * Desert Eagle, a large-caliber semi-automatic pistol manufactured by Magnum Research
 * Destroyer escort (US Navy hull classification symbol)

Places

 * Dé, Mali, a commune and town in Mali
 * De River, Mizoram, India
 * DE, abbreviation for the U.S. State of Delaware, used by the United States Postal Service and others
 * DE postcode area, for Derby and surrounding areas of England
 * Germany (ISO 3166-1 alpha-2 country code)
 * .de, the ccTLD for Germany

Science, technology, and mathematics

 * Design engineer, engineer whose specialty is design
 * Desktop environment, a graphical user interface commonly based on a desktop metaphor
 * Dextrose equivalent, the relative sweetness of sugars
 * Diatomaceous earth, a naturally occurring, soft, siliceous sedimentary rock mineral
 * Differential equation, an equation which derivatives of a function appear as variables
 * Differential evolution, a method of mathematical optimization
 * Doctor of Engineering, a degree equivalent to a Ph.D. in engineering
 * Dwarf elliptical galaxy (dE), in astronomy
 * Dynamics Explorer, a NASA satellite mission
 * Haplogroup DE (Y-DNA), a human Y-chromosome DNA haplogroup in genetics
 * ΔE (color space) (dE), a mathematical measurement of the distance between two points in a Lab color space

Other uses

 * De (Chinese), a concept of integrity in Daoism and virtue in Confucianism
 * Defensive end, a position in American and Canadian football
 * Distance education, studying through a correspondence course
 * De, a scale degree in tonic sol-fa (sharpened form of doh)