| Abbreviation | Definition |
|---|---|
| RNA | A Really Naughty Antelopes |
| RNA | Rádio Nacional de Angola |
| RNA | Reference Network Architecture |
| RNA | Regulated Navigation Area |
| RNA | Religion Newswriters Association |
| RNA | Return Not Administered |
| RNA | Ribose in Nuclear Action |
| RNA | Risk Not Acceptable |
| RNA | Romantic Novelists Association |
| RNA | Romantic Novelists' Association |
| RNA | Ross Nick And Aires |
| RNA | Royal National Association |
| RNA | Royal Nepalese Army |
| RNAF | Royal Netherlands Air Force |
| RNAF | Royal Norwegian Air Force |
| RNAP | Restored Names Accuracy Policy |
| RNAP | RNA polymerase |
| RNAV | Revalued Net Asset Value |
| RNB | Red Neck Blues |
| RNB | Resonant Nuclear Battery |