{{pp-pc1|small=yes}} {{Wiktionary|DD|dd}} '''DD''', '''dd''', or other variants may refer to: {{TOC right}}
== 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 *Dhivyadharshini, Indian television host and actress, known as 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'' *''Dhilluku Dhuddu'' franchise, Indian film series **''Dhilluku Dhuddu'' (2016), the first instalment in the ''Dhilluku Dhuddu'' series **''Dhilluku Dhuddu 2'' (2019), the second instalment in the ''Dhilluku Dhuddu'' series **''DD Returns'' (2023), the third instalment in the ''Dhilluku Dhuddu'' series **''Devil's Double Next Level'' (2025), the fourth instalment in the ''Dhilluku Dhuddu'' series *"Double D'z" (2022), a song by Black Eyed Peas from ''Elevation'' *Edd, commonly known as Double-D, a character from ''Ed, Edd n Eddy'' *D&D (Dungeons & Dragons), a fantasy tabletop role-playing game <!--Do not add entries that are not commonly known by these letters -->
== Business == * DuPont, which trades shares on the New York Stock Exchange as DD * Dunkin' Donuts, a coffee and doughnut 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 === * {{tag|dd|content=}}, 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 (IATA code) * 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 * South Sulawesi (vehicle registration prefix DD)
== 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 * Dompet Dhuafa, an Indonesian charity * Dine and dash, a form of theft by fraud * Direct debit, a way of paying bills * Double Diamond Burton Pale Ale
==See also== * Dede (disambiguation) * Dedee, a nickname * Deede (disambiguation) * Deedee (disambiguation) * Didi (disambiguation)
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