| Acronym | Definition |
|---|
| RCN | Royal College of Nursing (UK) |
| RCN | Record Control Number |
| RCN | Royal Canadian Navy |
| RCN | Research Council of Norway |
| RCN | Reconnaissance |
| RCN | Rectilinear Crossing Number |
| RCN | Report Control Number |
| RCN | Radio Cadena Nacional (Colombia) |
| RCN | Replacement Cost New (appraisal) |
| RCN | Residential Communications Network |
| RCN | Reproduction Cost New (appraisal) |
| RCN | Radio Caraïb Nancy (French radio station; est. 1988) |
| RCN | Report Control Number (Deficiency Reporting Investigation System) |
| RCN | Reverse Convertible Note |
| RCN | Reinan Cable Network (Japan) |
| RCN | Redress Control Number (US DHS) |
| RCN | Radio Corporación Nacional (Guatemala) |
| RCN | Radio Colorado Network |
| RCN | Requirements Change Notice |
| RCN | Racing Club Nantais (French athletic club) |
| RCN | Remote Computer Network |
| RCN | Railwayana Collectors' Network |
| RCN | Radio Chalom Nitsan (French radio station) |
| RCN | Radio-Club National (France) |
| RCN | Regional Cable Network |
| RCN | Rotary Club of Nairobi |
| RCN | Revolutionary Communist Network (UK) |
| RCN | Resonator Coupling Network (microwave theory) |
| RCN | Radio Consultant Network |
| RCN | Registered Comprehensive Nurse |
| RCN | Réseau de Conseils Normands (French: Normandy Network Consulting) |
| RCN | Risk Communications Network (Pueblo, CO) |
| RCN | Rugby Club Noisy le Sec (French rugby club) |
| RCN | Real Change Network (Aptos, CA) |