Chief Information Officer 
Central Imagery Office 
Chief Information Officers 
Cisco Information Online 
Command Information Office 
Chief Information Office 
Chief Investment Officer 
Congress of Industrial Organizations 
Customer Integration Office 
Carousel Instance Object 
carrier insertion oscillator 
Catalog of Infrared Observations 
Center Information Officer 
Central Intelligence Organisation 
Check It Out 
Chief of Information Officer 
Communications Information Officer 
Conventional International Origin 
Corporate Information Office 
Corporate Information Officer 
Central Input/Output 
Chairman In Office 
Chancellor's Immediate Office 
Channel Input/Output 
Chief Intelligence Officer 
Chief Internet Officer 
Coal-in-Oil 
Collège d'Implantologie Orale 
Command Information Officer 
command issuing office