| Acronym | Definition |
|---|
| ICG | International Crisis Group |
| ICG | International Coal Group |
| ICG | Indocyanine Green |
| ICG | Illinois Central Gulf (Railroad) |
| ICG | Incognito |
| ICG | Impedance Cardiography |
| ICG | International Cinematographers Guild (labor union) |
| ICG | International Consulting Group (various organizations) |
| ICG | Institute of Careers Guidance |
| ICG | Intermediate Capital Group PLC |
| ICG | Intercontinental Church of God |
| ICG | Institute of Cosmology and Gravitation (University of Portsmouth, UK) |
| ICG | Individual Care Grant (Illinois State education) |
| ICG | Interactive Computer Graphics |
| ICG | Islamabad College for Girls (Islamabad, Pakistan) |
| ICG | Inner City Games Foundation |
| ICG | Interagency Coordination Group |
| ICG | Independent Coin Grading Service |
| ICG | Interactive Course Guide |
| ICG | Intersector Coordination Group |
| ICG | Industry Coordinating Group |
| ICG | Infinity Consulting Group (New York, NY) |
| ICG | interagency core group (US DoD) |
| ICG | Integrated Command Generator |
| ICG | International Commision on Glass |
| ICG | Interface Coordination Group |
| ICG | Institut Canadien en Grèce (Canadian Institute in Greece) |
| ICG | Infinity Conference Group, Inc (Herndon, VA) |
| ICG | Interface Control Group |
| ICG | Interviewer's Classification Guide |
| ICG | International Congress of Gastroenterology |
| ICG | Indian Coast Guard (India) |
| ICG | Installation and Configuration Guide (various companies) |