| SSFI | Safety System Functional Inspection 
| Others |
| SSFI | Scaffolding Shoring and Forming Institute
| Others |
| SSFI | Scaffolding Shoring Forming Institute
| Others |
| SSFI | Scarf Social Functioning Index
| Others |
| SSFI | Select Services Films Inc
| Others |
| SSFI | Shimano Sport Fisheries Initiative
| Others |
| SSFI | Social Sector Franchise Initiative
| Others |
| SSFI | Social Sector Franchising Initiative
| Others |
| SSFI | Societatea Studentilor Farmacisti Iasi
| Others |
| SSFI | South Sudanese Friends International
| Others |
| SSFI | Spiral Structural Fractal Index
| Others |
| SSFI | Springboard Scholarship Foundation Inc
| Others |
| SSFI | Start Stack Function Indicator
| Others |
| SSFI | Start Stack Function It
| Others |
| SSFI | State selective field ionization
| Others |
| SSFI | State Systems Fidelity Inventory
| Others |
| SSFI | Suzuki Satria Fu Indonesia
| Others |
| SSFI | Systemically Significant Failing Institutions
| Others |
| SSFI | Systemically Significant Financial Institution
| Others |