| Acronym | Definition |
|---|
| SSSF➣School Sisters of St. Francis (religious order) |
| SSSF➣Steady State Steady Flow (control volume analysis assumption in mechanical engineering) |
| SSSF➣Stockholms Studentsångarförbund (male choir in Stockholm, Sweden) |
| SSSF➣Self Service Science Forum (Australia) |
| SSSF➣Svenska Svartkruts Skytte Federationen (Swedish: Swedish Black Powder Shooting Federation; Gothenburg, Sweden) |
| SSSF➣Space Station Support Facility |