| Acronym | Definition |
|---|
| SERN | Southeastern (weather reports) |
| SERN | Sweden Emilia Romagna Network (EU) |
| SERN | Sustainable Energy Regulation Network (Renewable Energy and Energy Efficient Partnership) |
| SERN | Single Expansion Ramp Nozzle (aircraft engine exhaust) |
| SERN | Security Expert Register Nederland (Dutch: Security Expert Register Netherlands) |
| SERN | Sudbury Education Resource Network (alternative education) |
