DX
- 386DX
- 486DX
- 510 (number)
- 510 AD
- Albatros D.X
- Bavarian D X
- Companies listed on the New York Stock Exchange (D)
- D-Generation X
- D10 (disambiguation)
- DNA nanotechnology
- DOCSIS
- DX (album)
- DX Group
- DX encoding
- DX register
- DX1 (disambiguation)
- DX2 (disambiguation)
- DXS (disambiguation)
- DXing
- Danish Air Transport
- Delta Chi
- Deluxe (disambiguation)
- Design Exchange
- Deus Ex
- Deus Ex (video game)
- Developer experience
- Digital radiography
- Digital transformation
- DirectX
- Dx (digraph)
- Fokker D.X
- LNWR DX Goods Class
- Leibniz's notation
- List of emoticons
- Mario Kart Arcade GP DX
- Medical diagnosis
- New Zealand DX class locomotive
- Nikon DX format
- Sonic Adventure DX
- Sunray DX Oil Company
- Tetris DX
- U.S. Dollar Index
- Yamaha DX Series