| Acronym | Definition |
|---|
| ODN | Organ Donor Network |
| ODN | Oligodeoxynucleotide |
| ODN | Out Dial Notification |
| ODN | Openware Developer Network |
| ODN | Open Data Network |
| ODN | Original Dialed Number (calling) |
| ODN | Optical Distribution Network |
| ODN | Optical Data Network |
| ODN | Ordnance Datum Newlyn (UK mapping coordinate system) |
| ODN | Orange Defense Network (Cybernations gaming group) |
| ODN | Outils Desinfection et Nettoyage Systeme (French: Disinfection Tools and Cleaning System) |
| ODN | Olathe Daily News (newspaper; Kansas) |
| ODN | Online Dictionary of Neuroscience |
| ODN | Organisation Development Network |
| ODN | Online Development Notebook |
| ODN | Obligation Document Number |
| ODN | Opera Di Nàzaret (Work of Nazareth) |
| ODN | Object Distinguished Name |
| ODN | Open Dealer Network (various companies) |
| ODN | Output Distribution Network |