CGO may refer to: Carlson, Gaskey & Olds: an intellectual property firm based in Birmingham, Michigan Catalogue of Galactic O Stars, an astronomical catalogue Central Gilts Office Ceria gadolinium oxide (used in Solid Oxide Fuel cells (SOFC)) CGO Ecology Limited, a UK-based ecological consultancy business Cgo, a subsystem in the Go programming language which enables the creation of Go packages that call C code Chief governance officer Chief governing officer Company-grade officer Chief growth officer Royal Concertgebouw Orchestra, a symphony orchestra of the Netherlands Zhengzhou Xinzheng International Airport (IATA: CGO) Cambridge Graduate Orchestra at Cambridge, UK International Symposium on Code Generation and Optimization Republic of the Congo (FIFA and IOC code: CGO)