WCG

WCG may refer to:


 * World Cyber Games, an international e-sports event
 * World Combat Games, a sports event
 * Wide Color Gamut
 * World Community Grid, for scientific research computing
 * Worldwide Church of God, renamed Grace Communion International in 2009
 * WCG (firm), an advertising agency
 * WCG (college), a group of UK colleges
 * WCG (Wide DC electric goods), a classification of locomotives of India