CGO

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)