| Acronym | Definition |
|---|
| DNR | Do Not Resuscitate |
| DNR | Department of Natural Resources |
| DNR | Digital Noise Reduction |
| DNR | Donetsk People's Republic (Ukraine) |
| DNR | Daunorubicin |
| DNR | Do Not Remove |
| DNR | Did Not Register (racing) |
| DNR | Do Not Reply |
| DNR | Dynamic Noise Reduction |
| DNR | De Nieuwe Regeling (Dutch: The New Rules) |
| DNR | Domain Name Registration |
| DNR | Dreams Not Reality (band) |
| DNR | DotnetRocks (.NET software radio show) |
| DNR | Dolby Noise Reduction |
| DNR | Disable Nested Reassign |
| DNR | Data Network Routing |
| DNR | Department of National Registration (Maldives) |
| DNR | Deutsche Naturschutzring (German: German Nature Ring) |
| DNR | Did Not Report |
| DNR | Det Norske Radiumhospital (Norwegian: Norwegian Radium Hospital) |
| DNR | Do Not Remember (adoption) |
| DNR | Do Not Reduce |
| DNR | Do Not Reproduce |
| DNR | Dienst Nationale Recherche (Dutch: National Criminal Investigation Service) |
| DNR | Domain Name Resolver |
| DNR | Descriptions de Niveaux de Référence (French: Description of Reference Levels) |
| DNR | Dialed Number Recorder |
| DNR | Dynamic Neutron Radiography |
| DNR | Do Not Revert (Ciena) |
| DNR | Do Not Revive (less common) |
| DNR | Dry Natural Rubber |
| DNR | Data Network Report |
| DNR | Do Not Refrigerate |
| DNR | Dynamic Network Routing |
| DNR | Drive Not Ready (computer error) |
| DNR | Department of National Revenue (Canadian) |
| DNR | Drop And Run (medical) |
| DNR | Director Naval Reserves |
| DNR | Do Not Reorder |
| DNR | Distance-To-Noise Ratio |
| DNR | Diazonaphthoquinone Novalac Resist |
| DNR | Department of Naval Research |
| DNR | Data Network Redesign |
| DNR | Digital Network Radio |
| DNR | Dundee Newtyle Railway |
| DNR | Director of Naval Reactors (US Navy) |