CGO may refer to:
Cogeco Inc. is a Canadian diversified telecommunications and media company headquartered in Montreal, Quebec, which serves residential and commercial customers through various subsidiaries.
The gradian is a unit of measurement of an angle, equivalent to 1/400 of a turn, 9/10 of a degree or π/200 of a radian.
HD 150136 is a multiple star system in the southern constellation of Ara, around 4,300 light years away.
The Crochet Guild of America (CGOA) is an association to encourage crocheting, based in Zanesville, Ohio, United States.
The Cartulaire général de l'Ordre des Hospitaliers de Saint-Jean de Jérusalem (1100-1310) is a 4-volume set of medieval documents.
Carrier grade open framework (CGOF) is a hardware-independent architecture for the telecommunications industry.
The Company Grade Officers' Council (commonly known as the CGOC) is a national organization of US Air Force Company Grade Officers (Lieutenants and Captains).
Claes Göran Andersson, born in 1951, is a Swedish professor at the Swiss Federal Institute of Technology in Zurich, Switzerland.