| Acronym | Definition |
|---|
| DNO | Det Norske Oljeselskap ASA (Norwegian Oil company) |
| DNO | Das Neue Orchester (German: Period Instruments Orchestra) |
| DNO | De Nederlandse Opera (Dutch: The Netherlands Opera) |
| DNO | Diplôme National d'Oenologue (French: National Diploma of Oenology; various universities) |
| DNO | Directive Nationale d'Orientation (French: National Orientation Directive) |
| DNO | Distribution Network Operator |
| DNO | Donor Network Operator (mobile communications operator) |
| DNO | Die Neue Ordnung (German: The New Order) |
| DNO | Do Not Open |
| DNO | Dark Narrow Oblique |
| DNO | Danish Nurses' Organization |
| DNO | Dad's Night Out |
| DNO | Do Not Operate |
| DNO | Dornes Neuville Olympique (French sports club) |
| DNO | Dead Nuts On |
| DNO | Delocalized Natural Orbital |
| DNO | Department of Network Operations |
| DNO | Directorate for Network Operations |
| DNO | David Nelson Ostrosser (Canadian musician) |
| DNO | Dilute Naphthalene Oil |