Dd

DD, dd, or other variants may refer to:

Arts and entertainment

• "D.D.", a track on mixtape Echoes of Silence by The Weeknd
• 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
• Erann DD, a Danish singer and songwriter

Business

• DuPont (formerly traded under the stock ticker symbol DD)
• Dunkin' Donuts, a company

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 US Defense Department

Places

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

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

Sports

• Delhi Daredevils, an Indian Premier League cricket franchise
• Delhi Dynamos FC, an Indian Super League franchise

Transportation

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

Other uses

• DD, a brassiere measurement
• Dd (digraph), in the Welsh language
• Degree of difficulty, in several sports
• 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

See also

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