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) (Д, д), 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)
 
See also
- Department of Education, a common government department