CSF
- CONMEBOL
- CSF CFR Timișoara
- CSF Group-Navigare
- Caesium fluoride
- California Scholarship Federation
- California State University, Fullerton
- Cancer slope factor
- Capsize screening formula
- Catholic Secular Forum
- Central Security Forces
- Cerebrospinal fluid
- China Securities Finance
- Christian Socialist Fellowship
- Christian Student Fellowship
- Classical swine fever
- Coalition Support Fund
- College of Santa Fe
- Collège de la Sainte Famille
- Colony-stimulating factor
- Colorado Shakespeare Festival
- Commercial Spaceflight Federation
- Community of St. Francis
- Community-supported fishery
- Compagnie générale de la télégraphie sans fil
- Comprehensive Soldier Fitness
- Configuration state function
- Conseil scolaire francophone de la Colombie-Britannique
- Contrast sensitivity function
- Critical success factor
- Crowd-sourced funding
- Curriculum and Standards Framework
- Granulocyte colony-stimulating factor
- Granulocyte-macrophage colony-stimulating factor
- Macrophage colony-stimulating factor
- NIST Cybersecurity Framework
- Thomson-CSF