| Acronym | Definition |
|---|
| IGC | Institute for Global Communications |
| IGC | Instant Game Collection |
| IGC | Intergovernmental Conference (EU) |
| IGC | Intergovernmental Committee (World Intellectual Property Organization; Switzerland) |
| IGC | International Graduate Center (various organizations) |
| IGC | Interactive Gaming Council |
| IGC | Instituto Gulbenkian de Ciência (Portugal) |
| IGC | International Group of Companies |
| IGC | Integrated Graphic Chipset |
| IGC | Instantaneous Gear Change |
| IGC | International Geological Congress |
| IGC | International Grains Council |
| IGC | Iraqi Governing Council |
| IGC | Instituto de Geociencias (University of Panama) |
| IGC | In-Game Currency (online gaming) |
| IGC | Independent Garden Center |
| IGC | International Gliding Commission |
| IGC | Indiana Government Center |
| IGC | Indiana Gaming Commission |
| IGC | Integrated Governance Committee (UK) |
| IGC | Intergranular Corrosion |
| IGC | Integrated Graphics Controller |
| IGC | Incremental Garbage Collector (computer memory management) |
| IGC | Infosphere Governance Catalog (software: IBM) |
| IGC | International Gas Code |
| IGC | International Gravity Commission |
| IGC | Integrated Global Concepts, Inc. (fax service provider) |
| IGC | Intelligent Graphics Controller |
| IGC | International Geophysical Conference |
| IGC | Indie Game Con (website) |
| IGC | Illini Glider Club (Monticello, Il) |
| IGC | Inspirational Gift Company (Tuscaloosa, AL) |
| IGC | International Geographic Congress |
| IGC | Imagery & Geospatial Community |
| IGC | Interstate General Corporation |
| IGC | International Glass Center |
| IGC | Initial Guidance Contract |
| IGC | Indian Gaming Center |
| IGC | Imagen Generada por Computadora |
| IGC | IDE/GTN (Integrated Development Environment/Global Transportation Network) Convergence (Joint USTRANSCOM and DLA Program) |
| IGC | Intergalactic Communicator (Tremors; TV show) |