DUN
| Acronym | Definition |
|---|---|
| DUN | Dial-Up Networking |
| DUN | Dunsmuir (Amtrak station code; Dunsmuir, CA) |
| DUN | Dewan Undangan Negeri (Malay: State Legislative Assembly) |
| DUN | Dial up Networking |
| DUN | Derelict, Underused and Neglected (land; UK) |
| DUN | Danske Unge Naturister (Danish: Danish Young Naturist) |
| DUN | Douglas United Nuclear (UNC Nuclear Industries) |
| DUN | Dorsal Ulnar Nerves |