- COI
COI may stand for:
* Center of Information, agency that followed theOSS and preceded theCentral Intelligence Agency
*Central Office of Information , UK Government department
*Champions on Ice , a skating tour
*Church of Ireland
*Coefficient of relationship , a synonym for Coefficient of inbreeding
*Cogent Communications , the stock-ticker symbol is CCOI
* Commercial open interest indicator for commodity speculation
*Community Of Interest , a computer networking technique of segregation of resources
* Confirmed Opt-In, a policy for obtaining mailing list recipients
*Conflict of interest
*Curie Institute (Warsaw) , the Marie Sklodowska-Curie Institute of Oncology
*Customer Owned Inventory , used in the Integration and Manufacturing Industry for products provided by the Customer to be used in the end product.
*Cytochrome c oxidase I, a gene used in molecular systematics
*Indian Ocean Commission , known in French as the "Commission de l'Océan Indien"
*Path 66 , an electrical power transmission system also called California Oregon Intertie
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