IGG

IGG, IgG or igg may refer to:


 * IGG Inc., a Chinese video game company
 * IGG Software, an American software company
 * Igiugig Airport, code IGG
 * Immunoglobulin G, a type of antibody
 * Independent Investigations Group, the former name of the Center for Inquiry Investigations Group (CIIG)
 * Inert gas generator, a kind of machinery aboard tankers
 * Investigative genetic genealogy, utilizing genetic information for identifying suspects or victims in criminal cases