| Abbreviation | Definition |
|---|---|
| RNN | Reading Now Network |
| RNN | Really Not Necessary |
| RNN | Recurrent Neural Networks |
| RNN | Recurrent Neutral Networks |
| RNN | Rhein Nahe Nahverkehrsverbund |
| RNN | Rukavishnikov Nikolay Nikolaevich |
| RNO | Radio Network Optimization |
| RNO | REALTORS networking on Oahu |
| RNO | Recipient Network Operator |
| RNO | Recognize No Opponent |
| RNO | Registered Neighborhood Organization |
| RNO | Registered Neighborhood Organizations |
| RNOC | Research Network Operations Center |
| RNOC | Road Network Operations Centre |
| RNOSC | Regional Network Operations and Security Center |
| RNOSC | Regional Network Operations and Security Centers |
| RNOSC | Rwanda National Olympic and Sports Committee |
| RNP | Rank Not Published |
| RNP | ranking not published |
| RNP | Rapid Notification Platform |