1. Arts and entertainment

2. Business

3. Military

4. Places

5. Science and technology
     Computing   Other uses in science and technology 

6. Sports

7. Transportation

8. Other uses

9. See also

DD, dd, or other variants may refer to:

Arts and entertainment

• "D.D.", a track on 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
• Daredevil, a Marvel Comics character
• 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

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 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)

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

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)

• Posterior cusp
• Posterior cutaneous nerve of arm
• Posterior cutaneous nerve of forearm
• Posterior cutaneous nerve of the arm
• Posterior cutaneous nerve of the thigh
• Posterior cutaneous nerve of thigh
• Posterior deep temporal artery
• Posterior Deltoids
• Posterior descending artery
• Posterior descending branch
• Posterior division
• Posterior division of the obturator artery
• Posterior divisions
• Posterior drawer sign
• Posterior elastic lamina
• Posterior ethmodial nerve
• Posterior ethmoidal artery
• Posterior ethmoidal canal
• Posterior ethmoidal cells
• Posterior ethmoidal foramen
• Posterior ethmoidal foramina
• Posterior ethmoidal nerve
• Posterior ethmoidal vein
• Posterior ethmoidal vessels
• Posterior ethmoid foramen