| Rank | Abbreviation | Meaning |
|---|
| ***** | CCSF | Certified Cargo Screening Facility
| |
| *** | CCSF | Concerned Citizens for Safe
| |
| *** | CCSF | carotid-cavernous sinus fistula
| |
| *** | CCSF | Catholic Community Services Foundation
| |
| *** | CCSF | Childrens Council of San Franci
| |
| ** | CCSF | Comité Consultatif du Secteur Financier
| |
| ** | CCSF | Community College Support Fund
| |
| ** | CCSF | Chambre de Commerce Suisse En France
| |
| ** | CCSF | Commission des Chefs de Services Financiers
| |
| ** | CCSF | Coca-Cola Scholars Foundation
| |
| ** | CCSF | Caltech Concurrent Supercomputing Facilities
| |
| ** | CCSF | City and County of San Francisco's
| |
| * | CCSF | Canadian Cadet Scholarship Fund
| |
| * | CCSF | City College San Francisco
| |
| * | CCSF | Cornell Center for a Sustainable Future
| |
| * | CCSF | Commander Caribbean Sea Frontier
| |
| * | CCSF | Changing Childrens Services Fund
| |
| * | CCSF | Concord Carlisle Scholarship Fund
| |
| * | CCSF | Canadian Centennial Scholarship Fund
| |
| * | CCSF | Council of San Francisco
| |
| * | CCSF | Creatures Community Spirit Festival
| |
| * | CCSF | carotid cavernous sinus fistulae
| |
| * | CCSF | Chechen Civil Society Forum
| |
| * | CCSF | City College of San Fransisco
| |
| * | CCSF | Caribbean Civil Society Forum
| |