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
  • 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

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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

  • , 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)