Automatic Gain Control 
Apollo Guidance Computer 
Aerojet-General Corporation 
AG CHEM 
Associated General Contractors 
Automatic Generation Control 
Adjutant General's Corps 
Agricultural Genetics Company 
Arkansas Geological Commission 
Army Geospatial Center 
Associate General Counsel 
Audio Graphic Conferencing 
Abort Guidance Computer 
absolute granulocyte count 
Adaptive Gain Control 
adenocarcinoma of the gastric cardia 
Adjutant General Corps 
advance guard company 
advanced gas centrifuge 
advanced gastric cancer 
advanced gastric carcinoma 
advanced gastric carcinomas 
Advanced Graduate Certificate 
Advanced Graphic Controller 
Advanced Graphics Control 
Aggressive Content 
Agriculture Canada 
Air Group Commander 
Alaska Game Commission 
Altschul Group Corporation