| Abbreviation | Definition |
|---|---|
| DN | donor number |
| DN | dysplastic naevus |
| DNA | did not arrive |
| DNA-CR | Do not attempt cardiopulmonary resuscitation |
| DNAR | do not attempt resuscitation |
| DNDRN | Dementias and Neurodegenerative Disease Research Network |
| DNGN | Disability Network Group Net |
| DNI | do not intubate (similar to DNR) |
| DNS | Director of Nursing Services |
| DNS | dysplastic naevus syndrome |
| DNW | DNW Drugs North West |
| DO | Diploma in Ophthalmology |
| DO | Diploma in Osteopathy |
| DO | direct observation |
| DO | directly observed |
| DO | disto-occlusive |
| DO | distraction osteogenesis |
| DO | Doctor of Optometry |
| DO | dopamine oxidase |
| DOA | Division of Accreditation |