DD
- .dd
- D-D locomotive
- DD (character)
- DD Form 214
- DD Index
- DD National
- DD Returns
- DD postcode area
- DD tank
- Daman and Diu
- Dancing Dolls
- Daniel Defense
- Danish Air Lines
- Daredevil (Marvel Comics character)
- Data Deficient
- Data Disc
- Dd (digraph)
- Death domain
- Debian
- Decimal degrees
- Deckadance
- Decorative Designers
- Dede (disambiguation)
- Dedee
- Deede (disambiguation)
- Deedee (disambiguation)
- Degree of difficulty
- Delhi Capitals
- Delhi Dynamos FC
- Demand draft
- Deployment descriptor
- Deputy Director (disambiguation)
- Designated driver
- Deuterium-deuterium fusion
- Developmental disability
- Devil's Double Next Level
- Dhilluku Dhuddu
- Dhilluku Dhuddu (film series)
- Dhilluku Dhuddu 2
- Dhivyadharshini
- Didi (disambiguation)
- Dine and dash
- Direct debit
- Dishonorable discharge
- Doctor of Divinity
- Dolby Digital
- Donegal Daily
- Doordarshan
- Double Diamond Burton Pale Ale
- Double density
- Dresden
- DuPont
- Dunkin' Donuts
- Echoes of Silence
- Ed, Edd n Eddy
- Elevation (Black Eyed Peas album)
- Erann DD
- HTML element
- Invincible D-D
- Matt Murdock (Marvel Cinematic Universe)
- Nok Air
- The Tenth Planet
- Victorian Railways Dd class