| Acronym | Definition |
|---|
| DNN | DotNetNuke |
| DNN | Deep Neural Network (machine learning) |
| DNN | Dresdner Neueste Nachrichten (German newspaper; Dresden, Germany) |
| DNN | Defense Nuclear Nonproliferation (US Department of Energy) |
| DNN | Disaster News Network (Village Life Company) |
| DNN | Denison Mines Corp. (stock symbol; Canada) |
| DNN | Domain Name News |
| DNN | Dinitronaphthalene |
| DNN | Derby News Network (roller derby website) |
| DNN | Deaf News Network |
| DNN | Department of Neurology and Neurosurgery (Estonia) |
| DNN | Dynamic Neural Network |
| DNN | Darling New Neighbors (band) |
| DNN | Diploma in Nursery Nursing |
| DNN | Down Nicotine Now (herbal treatment) |
| DNN | Dark Narrow Normal |
| DNN | Distributeur Non Nationalisé (French: Non-Nationalized Distributors; energy industry) |
| DNN | Deltavliegschool Noord Nederland |