| Acronym | Meaning |
| IGC | IDE/GTN (Integrated Development Environment/Global Transportation Network) Convergence (Joint USTRANSCOM and DLA Program) |
| IGC | Indiana Gaming Commission |
| IGC | Indiana Government Center |
| IGC | Initial Guidance Contract |
| IGC | Integrated Governance Committee (UK) |
| IGC | Intergovernmental Committee (World Intellectual Property Organization; Switzerland) |
| IGC | Intergovernmental Conference (EU) |
| IGC | Iraqi Governing Council |