| Acronym | Definition |
|---|
| SEFD➣Stichting Examens Financiele Dienstverlening (Dutch: Financial Services Exams Foundation) |
| SEFD➣System Equivalent Flux Density (space research) |
| SEFD➣Steger Estates Fire Department (Chicago Heights, IL) |
| SEFD➣Sonoita-Elgin Fire Department (Arizona) |
| SEFD➣Shape Error Forecasting Decoding |
| SEFD➣Science and Engineering Fun Days (Hong Kong) |