IgG
| Acronym | Definition |
|---|---|
| IgG | Immunoglobulin G |
| IgG | Ignore |
| IgG | Istituto Giannina Gaslini (Italian institute) |
| IgG | Istituto Di Geoscienze e Georisorse (Italy) |
| IgG | Institute of Geology and Geoinformation (Japan) |
| IgG | Inspired Gaming Group (UK) |
| IgG | Irish Girl Guides |
| IgG | I Gotta Go |
| IgG | Inter Governmental Group |
| IgG | Inert Gas Generator |
| IgG | Ill Gotten Gains (Miami Vice TV show) |
| IgG | I Got Game (gaming clan) |
| IgG | Inter Government Group |