DD

DD, dd, or other variants may refer to:

Arts and entertainment

• "D.D.", track from the mixtape Echoes of Silence by the Weeknd
• DD (character), a character in The Saga of Seven Suns novels by Kevin J. Anderson
• DD National or DD1, an Indian national television channel
• Dancing Dolls, a Japanese all-female pop group
• Dhivya Dharshini, Indian television host and actress, known as DD, see Koffee With DD
• Daredevil (Marvel Comics character), a Marvel Comics character
  • Matt Murdock (Marvel Cinematic Universe), the Marvel Cinematic Universe counterpart
• Decorative Designers
• Donegal Daily, an Irish news website
• Doordarshan, a public service broadcaster in India
• Erann DD, a Danish singer and songwriter
• DD, the production code for the 1966 Doctor Who serial The Tenth Planet
• DD Returns (2023), the third film in the Dhilluku Dhuddu series
• "Double D'z" (2022), a song from Elevation (Black Eyed Peas album)
• Edd, commonly known as Double-D, a character from Ed, Edd n Eddy

Business

• DuPont, which trades shares on the New York Stock Exchange as DD
• Dunkin' Donuts, a company
• Data Disc
• Dioničko društvo (d.d. or D.D.), a type of Joint-stock company in Bosnian and Croatian languages

Military

• DD tank, an amphibious tank
• Dishonorable discharge, a punitive discharge in the U.S. military
• DD, the U.S. Navy hull classification for destroyers
• DD Form 214, a form used by the U.S. Defense Department

Places

• DD postcode area, in Scotland
• .dd, a hypothetical domain name for the German Democratic Republic
• Dresden, Germany (license plate code DD)
• Daman and Diu, a former union territory of India, now part of Dadra and Nagar Haveli and Daman and Diu

Science and technology

Computing

• <dd></dd>, an HTML element for specifying definition data
• dd (Unix), a program that copies and converts files and data
• Deckadance, a DJ program for Windows and Mac OS X designed by Image-Line
• Deployment descriptor, a component in Java Platform, Enterprise Edition applications
• Logo for Dolby Digital, audio compression technologies developed by Dolby Laboratories
• Double density, a capacity designation on magnetic storage, usually floppy disks
• Debian Developer, the traditional full-membership role in Debian

Other uses in science and technology

• Data Deficient, a rating on the IUCN Red List of Threatened Species
• Decimal degrees, geographic coordinates shown using decimal fractions
• Death domain, a protein-interaction module, a subclass of the death fold protein motif
• DD Index, for Democracy-Dictatorship Index
• Abbreviation for dolichospondylic dysplasia, a genetic syndrome
• Developmental disability, or developmentally disabled, a diverse group of chronic conditions due to mental or physical impairments arising before adulthood
• Deuterium-deuterium fusion, a type of nuclear fusion

Sports

• Delhi Daredevils, former name of Delhi Capitals
• Delhi Dynamos FC, an Indian Super League franchise, now Odisha FC

Transportation

• DD tank, an amphibious tank
• D-D locomotive, the AAR classification for a railway locomotive with two four-axle bogies
• Danish Air Lines, former airline
• Invincible D-D, a prototype aircraft
• Nok Air, a low-cost airline based in Thailand
• Victorian Railways Dd class, a class of steam locomotives in Australia

Other uses

• DD, a brassiere measurement
• Dd (digraph), in the Welsh language
• Daniel Defense, a firearms manufacturer
• Degree of difficulty, in several sports
• Demand draft, a negotiable instrument issued by the bank
• Deputy Director (disambiguation), a rank in some organizations
• Designated driver, a person who remains sober as the responsible driver
• Doctor of Divinity, an academic degree
• Dine and dash, a form of theft by fraud
• Direct debit, a way of paying bills

See also

• Dede (disambiguation)
• Dedee, a nickname
• Deede (disambiguation)
• Deedee (disambiguation)
• Didi (disambiguation)