DNU
| Acronym | Definition |
|---|---|
| DNU | Do Not Understand (used in reviewing academic papers) |
| DNU | Digital Network Unit |
| DNU | Do Not Use |
| DNU | Decreto de Necesidad y Urgencia (Argentina) |
| DNU | Dr. Nausch Unternehmensberatung (Germany) |
| DNU | Dansk Naturist Union (Danish: Danish Naturist Union) |
| DNU | Delta Nu Alpha |
| DNU | Department of Natural Unicorns (fictional; Lake Superior State University; Michigan) |
| DNU | Dyspepsie Non Ulcéreuse (French: Nonulcer Dyspepsia; gastroenterology) |
| DNU | Deez Nuts University |
| DNU | Dead from the Neck Up |