| Acronym | Definition |
|---|
| CFST | Concrete Filled Steel Tube (arch bridges) |
| CFST | Commission Fédérale de Coordination pour la Sécurité au Travail (French: Federal Coordination Commission for Occupational Safety; Switzerland) |
| CFST | Certificat de Français Scientifique et Technique (French: Scientific and Technical French Certificate; language certification) |
| CFST | Coalition Forces Support Team (US DoD) |
| CFST | Certified Field Support Technician |
| CFST | Citizens for Sensible Transportation (Oregon) |
| CFST | Crew Familiarization & System Training (oilfields) |
| CFST | Compagnie Financière Saint Thomas (French: Saint Thomas Financial Company) |
| CFST | Color Form Sorting Test (memory) |
| CFST | State Coupling Fault |
| CFST | Comma-Free, Sync-Timing (code) |