FENA
| Acronym | Definition |
|---|---|
| FENA | Federación Ecuatoriana de Natación (Spanish: Ecuadorian Swimming Federation) |
| FENA | Fractional Excretion of Sodium |
| FENA | Furukawa Electric North America (now American Furukawa Inc.; Plymouth, MI) |
| FENA | Ferguson Enthusiasts of North America |
| FENA | Florida Emergency Nurses Association |
| FENA | Center on Functional Engineered and Nano Architectonics (research institute; est. 2003; University of California, Los Angeles) |
| FENA | Far East News Agency |
| FENA | Future Enterprise Network Architecture |