| PFSS | Pacific Flyway Shorebird Survey
| Others |
| PFSS | Panama Field Study Semester
| Others |
| PFSS | Partial Flow Sampling System
| Others |
| PFSS | Partner For Student Success
| Others |
| PFSS | Partnership For Student Success
| Others |
| PFSS | Patient and Family Support Services
| Others |
| PFSS | Patient Financial Services System
| Others |
| PFSS | Pay for Safety Scheme
| Others |
| PFSS | Pet Fostering Service Scotland
| Others |
| PFSS | Potential Field Source Surface
| Others |
| PFSS | Preventative and Family Support Services
| Others |
| PFSS | Prime Futures and Securities Services
| Others |
| PFSS | Private Financial Services Solutions
| Others |
| PFSS | Process For Six Sigma
| Others |
| PFSS | Protective Force Services Subcontractor
| Others |
| PFSS | Pulmonary Functional Status Scale
| Others |