Dun
- Angus Dun
- Bluetooth profile
- Consort Dun
- Data Universal Numbering System
- Dennis Dun
- Dial-up networking
- Doon (disambiguation)
- Doon Valley
- Dun (fortification)
- Dun Bhruichlinn
- Dun Borrafiach
- Dun Cow
- Dun Deal
- Dun Glacier
- Dun Guaidhre
- Dun Karm Psaila
- Dun Mihaka
- Dun Mikiel Xerri
- Dun Nosebridge
- Dun Ringill
- Dun Sar
- Dun comma
- Dun gene
- Dun, Angus
- Dun, Ariège
- Dun, Iran
- Dun, Norway
- Dun-le-Poëlier
- Dun-sur-Meuse
- Dunn (disambiguation)
- Dunning (disambiguation)
- Duns (disambiguation)
- Dùn
- Dün
- Dün (band)
- Edwin Dun
- House of Dun
- Jean Dun
- Josh Dun
- Mao Dun
- Prince Dun
- River Dun (disambiguation)
- Smith Dun
- State legislative assemblies of Malaysia
- Subimago
- Tan Dun
- William Sutherland Dun
- Xiahou Dun