| Acronym | Definition |
|---|
| DON | Department Of the Navy |
| DON | Donald |
| DON | Dead of Night (gaming clans) |
| DON | Double or Nothing |
| DON | Director Of Nursing |
| DON | Department of Navy |
| DON | Donnerstag (German: Thursday) |
| DON | Determination of Need (various locations) |
| DON | Department of Neighborhoods (various locations) |
| DON | Deoxynivalenol |
| DON | Digital Overlay Network |
| DON | Digital Optical Network |
| DON | Declaration of Neutrality (Cyber Nations) |
| DON | Description of Need |
| DON | Delivery Order Number |
| DON | Dysbaric Osteonecrosis (biology) |
| DON | Document Order Number |
| DON | Donation |
| DON | Dragons of Norrath (online role-playing game) |
| DON | Delo Osobennogo Nablyudeniya (Russian: special surveillance file; KGB slang) |
| DON | De Origin Noble (of Noble Origin; title of address) |
| DON | Dissolved Organic Nitrogen |