Common Gateway Interface 
Computer Generated Imagery 
Computer Graphics Interface 
CAGIVA 
Clinical Global Impression 
combustible gas indicator 
Computer Graphics International 
Cell Global Identification 
Chief Ground Instructor 
Commercial grade item 
Common Guard Interface 
Computer Generated Image 
Computer Generated Images 
Canadian General Investments 
Cell Global Identity 
Center for Geographic Information 
Certified Genealogical Instructor 
Chief Gunnery Instructor 
Client Generated Index 
Clinical Global Impression Scale 
Clinical Global Impressions 
Clinical Global Impressions Scale 
Clinical Global Improvement 
Clinical Global Index 
Coast Guard Institute 
Coast Guard Intelligence 
Coast Guard Investigations 
Collingwood Grain Incorporation 
Color Graphics Interface 
Commanding General's Inspections