BCO may refer to: Baco Airport, an airport in Ethiopia. BioCompute Object, a type of computational file built using the BioCompute standard for communicating workflows in high throughput sequencing analysis. Baseball Confederation of Oceania, the governing body for baseball in Oceania. Binary-coded octal, binary-encoded octal code Biodiversity Convention Office, a Canadian government office on biodiversity. Cash Offer, an all-cash non-contingent real estate offer. Boulder, Colorado