DD, dd, or other variants may refer to:

Arts and entertainment

  • DD, 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
  • Daredevil, a Marvel Comics character
  • Doordarshan, a public service broadcaster in India




  • DD postcode area, in Scotland
  • .dd, a hypothetical domain name for the German Democratic Republic
  • Dresden, Germany (license plate code DD)

Science and technology


  • DD in hexadecimal, equalling 221
  • <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

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



Other uses