| Acronym | Definition |
|---|
| NNA➣National Notary Association (Chatsworth, California) |
| NNA➣Nissan North America Inc. |
| NNA➣Nissan North America |
| NNA➣National News Agency (Lebanon) |
| NNA➣National Newspaper Association |
| NNA➣Nine Network Australia |
| NNA➣Northern Nevada Aquatics (Reno, NV) |
| NNA➣Nevada Nurses Association |
| NNA➣Neonatal Nurses Association |
| NNA➣Need Not Apply |
| NNA➣Net New Assets |
| NNA➣National Nursing Association |
| NNA➣Neuroscience and Neuropsychology of Aging Program (NIA) |
| NNA➣Nebraska Nurses Association |
| NNA➣Northern Nevada Aviation (flight school; Reno, NV) |
| NNA➣Nebraska Numismatic Association |
| NNA➣Neutral Non-Allied |
| NNA➣National Nertz Association (gaming group) |