| Acronym | Definition |
|---|
| RHN➣Regions for Health Network (World Health Organization) |
| RHN➣Red Hat Network |
| RHN➣Rocking Horse Nursery (UK) |
| RHN➣Regional Hub Node (various locations) |
| RHN➣Registered Holistic Nutritionist |
| RHN➣RedHat Network |
| RHN➣The Royal Hospital for Neuro-Disability (London, England) |
| RHN➣Russian Hill Neighbors (San Francisco, California) |
| RHN➣Revue Historique Neuchâteloise (French) |
| RHN➣Rural Housing Network |
| RHN➣Robin Norwood |
| RHN➣Rockwell Hardness Number |
| RHN➣Rh-Null, Regulator Type |
| RHN➣Right-Handed Neutrino |
| RHN➣Republic of Haven Navy (Honor Harrington science fiction novels) |
| RHN➣Remote Health Node (NASA) |
| RHN➣Reducing Hex Nipples |
| RHN➣Repeater Hybrid Network |
| RHN➣Radio Habbo Net |
| RHN➣Rougham Hall Nurseries (UK) |