PFS
- Apple Online Store
- Hakka Chinese
- Mining feasibility study
- Pasadena Unified School District
- Patellofemoral syndrome
- Peace and Friendship Stadium
- Penang Free School
- Perfect forward secrecy
- Personal Financial Specialist
- Pha̍k-fa-sṳ
- Philadelphia Folksong Society
- Picture Frame Seduction
- Planetary Fourier Spectrometer
- PlaysForSure
- Port security
- Post-finasteride syndrome
- Prefrontal synthesis
- Primerica Financial Services
- Princeton Friends School
- Professional File System
- Progression-free survival
- Property and Freedom Society
- Provincial Forest Service (disambiguation)
- Puta falta de sacanagem
- Restart (band)
- Summer school
- Syringe