| CFK | Cabrio Freunde Kunterbunt 
| Others |
| CFK | Carbon Fiber Kevlar
| Others |
| CFK | Carbon Fiber Kreations
| Others |
| CFK | Carbonfasterverstarkter Kunststoff
| Others |
| CFK | Caring for the Kenai
| Others |
| CFK | Carolina for Kibera
| Others |
| CFK | Cartridges for Kids
| Others |
| CFK | Cash for Keys
| Others |
| CFK | Celcius Fahrenheit Kelvin
| Others |
| CFK | Center For Knowledge
| Others |
| CFK | Cerato Forte and Koup
| Others |
| CFK | Change for Kids
| Others |
| CFK | Charles Foster Kane
| Others |
| CFK | Christian Friends of Korea
| Others |
| CFK | Clement Fitzpatrick and Kenworthy
| Others |
| CFK | Coalition for Kids
| Others |
| CFK | Coats for Kids
| Others |
| CFK | College for Kids
| Others |
| CFK | College of the Florida Keys
| Others |
| CFK | Communications Flyaway Kit
| Others |
| CFK | Computer Forum KaHo
| Others |
| CFK | Computer Front Kern
| Others |
| CFK | Computers For Kids
| Others |
| CFK | Concept Football Kits
| Others |
| CFK | Congregational Friendly Key
| Others |
| CFK | Congregations For Kids
| Others |
| CFK | Connecting For Kids
| Others |
| CFK | Contemporary Folding Knife
| Others |
| CFK | Cooks For Kids
| Others |
| CFK | Council for Frontiers of Knowledge
| Others |
| CFK | Crafts Fido Knitting
| Others |