Certified Funds Specialist 
Certified Fund Specialist 
Chronic Fatigue Syndrome 
cubic feet per second 
Canadian Forest Service 
Climate Forecast System 
Common File System 
Cryogenic Fluid Storage 
Cryptographic File System 
Canadian Forces Station 
Center for Standards 
Central Flying School 
Command File System 
Committee on Fundamental Science 
Cryptographic Filesystem 
Call Forwarding System 
Canadian Federation of Students 
Carrier Frequency Shift 
Children and Family Services 
Cluster File System 
Commodity Flow Survey 
Common Functional Specifications 
Computerized Forwarding System 
Container Freight Station 
Continuous Feed Session 
continuous flow system 
contract field services 
core flood system 
Coupled Forecast System 
Cabin File Server