| Acronym | Definition |
|---|
| FSSP➣Fraternité Sacerdotale Saint-Pierre (French: Priestly Fraternity of Saint Peter) |
| FSSP➣Fold Classification Based on Structure-Structure Alignment of Proteins |
| FSSP➣Forward Scattering Spectrometer Probe |
| FSSP➣Fraternitas Sacerdotalis Sancti Petri (Priestly Fraternity of Saint Peter) |
| FSSP➣Federal Shared Service Provider (US Treasury) |
| FSSP➣Fuel System Supply Point |
| FSSP➣Flatbush Shomrim Safety Patrol (New York) |
| FSSP➣Faculty Subcommittee on Sponsored Programs |
| FSSP➣Facility Security and Safety Plan |
| FSSP➣Fire Support Specialist (BFIST crew) |