CGA may stand for:* California's Great America Canadian Gemmological Association Casual Games Association Central Government Accounts, UK government Central of Georgia Railway Centro de Gestión Avanzado (Advanced Management Centre), manages the Andalusian ICT schools Network Certified General Accountant CGA Directory of CGA Organizations Charitable Gift Annuity Chorionic gonadotropin alpha, a glycoprotein hormone Christian Gamers Alliance Chromogranin A Color Graphics Adapter C… (More on Cga)