SFIL
| Acronym | Definition |
|---|---|
| SFIL | Sound File |
| SFIL | Step Father-in-Law |
| SFIL | Step and Flash Imprint Lithography |
| SFIL | Sheffield Forgemasters International Ltd. (Sheffield, South Yorkshire, England, UK) |
| SFIL | Strontium Ferriten India Limited |
| SFIL | Search for Intelligent Life (online forum; Rutland, VT) |