CGB

CGB may refer to:
 * covertgoBlue, a popular youtube content creator
 * Chorionic gonadotropin beta, a protein encoded by the CGB gene
 * Christian Trade Union Federation of Germany
 * Compagnie des Chemins de Fer de Grande Banlieue, a defunct railway in France
 * Consumer & Governmental Affairs Bureau, a part of the Federal Communications Commission
 * Craigieburn railway station, Melbourne
 * Game Boy Color (product code CGB-001), Nintendo
 * Marechal Rondon International Airport (IATA code), in Cuiabá, Brazil
 * Station code for Cigombong railway station