FRSN
| Acronym | Definition |
|---|---|
| FRSN | Fellow of the Royal Society of New South Wales (New South Wales, Australia) |
| FRSN | First Responder Support Network (emergency responders) |
| FRSN | Four Regions Slum Network (Thailand) |
| FRSN | Facultad Regional San Nicolas (Universidad Tecnológica Nacional; Buenos Aires, Argentina) |