DD

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

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

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

<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

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

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)