CGU may refer to: Canadian Geophysical Union, a Canadian learned society CGU plc, a British insurance company CGU Insurance, an Australian insurance company Chang Gung University in Taiwan Christelijk Gymnasium Utrecht Claremont Graduate University in California in the United States Compostela Group of Universities, a European university network Office of the Inspector General (Brazil), abbreviated CGU in Portuguese a codon for the amino acid arginine a cash generating unit, an IFRS accounting term