| Acronym | Definition |
|---|
| SIEF➣Substance Information Exchange Forum |
| SIEF➣Societe Internationale d'Ethnologie et de Folklore (French) |
| SIEF➣Saskatchewan Indian Equity Foundation (Regina, Saskatchewan, Canada) |
| SIEF➣Society for Ethnology and Folklore (Meertens Institute; Amsterdam, Netherlands) |
| SIEF➣Seoul International Electric Fair (South Korea) |
| SIEF➣Secondary Injury Enhancement Fund (Canada) |