| Acronym | Definition |
|---|
| SffR➣Samfylkingarfélagið Í Reykjavík (Icelandic: Social Democratic Alliance Federation of Reykjavik; Reykjavik, Iceland) |
| SffR➣Sioux Falls Fire Rescue (Sioux Falls, SD) |
| SffR➣Svensk Förening för Radiofysik (Swedish Society of Radiation Physics) |
| SffR➣South Fork Feather River (California) |
| SffR➣Shavers Fork Fire Rescue (Pocahontas County, WV) |
| SffR➣Space Free-Flying Robot (various universities) |
| SffR➣Standard for Full Registration (teaching) |
| SffR➣Strategy and Future Forces Review |