| Acronym | Definition |
|---|
| RRN | Red River of the North (North American River) |
| RRN | Relative Record Number |
| RRN | Request Rejection Notification |
| RRN | Run River North (band) |
| RRN | Réseau Routier National (French: National Highway System; Canada and France) |
| RRN | Rural Reconstruction Nepal |
| RRN | Rapid Response Network (internet) |
| RRN | Reciprocal Research Network (Canada) |
| RRN | Report Reference Number |
| RRN | Recovering Racists Network |
| RRN | Regional Research Network |
| RRN | Reconciliation Resource Network |
| RRN | Retrieval Reference Number |
| RRN | Record Row Number |
| RRN | Restructuración de Redes Neuronales (Spanish: Restructuring of Neural Networks) |
| RRN | Routing Recording Number (telephony) |
| RRN | Repetitive Request Number |