| Acronym | Definition |
|---|
| DNA | Deoxyribonucleic Acid |
| DNA | Department(al) Network Administrator |
| DNA | Does Not Apply |
| DNA | Genentech, Inc (stock symbol) |
| DNA | Did Not Attack (Dana Carvey) |
| DNA | Did Not Attend |
| DNA | Designated National Authority |
| DNA | Do Not Ask |
| DNA | Did Not Answer |
| DNA | Data Not Available |
| DNA | Defense Nuclear Agency |
| DNA | Directia Nationala Anticoruptie (Romanian) |
| DNA | Do Not Answer (cell phone) |
| DNA | Do Not Approve |
| DNA | Distributed interNet Applications |
| DNA | Digital Network Architecture |
| DNA | Development Needs Analysis |
| DNA | Dermatology Nurses' Association |
| DNA | Do Not Adopt (used by animal shelters to refer to animal abusers) |
| DNA | Do Not Admit |
| DNA | Digital Nonlinear Accelerator |
| DNA | Det Norske Arbeiderparti (Norwegian Labour Party) |
| DNA | Distributed Internet Applications Architecture (Microsoft) |
| DNA | Douglas Noel Adams (late British author of the Hitchhiker's Guide to the Galaxy series) |
| DNA | Dynamic Network Architecture |
| DNA | Dynamic Network Administration (Ericsson) |
| DNA | De Nieuw Amsterdam (theater group) |
| DNA | Distributed Network Attack |
| DNA | Do Not Abbreviate |
| DnA | Do Not Abbreviate (online gaming clan) |
| DNA | Distributed Network Analyzer |
| DNA | Delta Nu Alpha |
| DNA | Deutscher Normenausschuss (German Committee of Standards) |
| DNA | Direct Network Access |
| DNA | Delaware Nurses Association |
| DNA | Dernière Nouvelles d'Alsace (French newspaper) |
| DNA | National Dyslexia Association (humor) |
| DNA | DoNotAge (OSPF) |
| DNA | Distributed Internetwork Architecture (Microsoft) |
| DNA | Dynamic Network Analyzer (Lucent) |
| DNA | Datanetwork Associates (Software) |
| DNA | Doctors Net Access |
| DNA | Dinebeiina Nahiilna be Agaditahe (Navajo legal counselors) |
| DNA | Delayed Neutron Activation |
| DNA | Down Auxiliary |
| DNA | Definitely Not Attractive |
| DNA | Detroit News Agency |
| DNA | Drug 'n Alcohol (band) |
| DNA | Diversified Naval Architects, Inc. (Ottawa, Ontario, Canada) |
| DNA | Dorchester Neighborhood Association (Waldorf, Maryland) |
| DNA | Digital Narrowband Analysis |
| DNA | Djibouti National Army |
| DNA | Distributed Networking Agent |
| DNA | Downriver Numismatic Association |