| Acronym | Definition |
|---|
| GIG | Global Information Grid (US DoD) |
| GIG | Global Information Grid |
| GIG | Genetic Interest Group (UK) |
| GIG | Get It Going |
| GIG | Green Is Good |
| GIG | Global Investment Group (various organizations) |
| GIG | Guangzhou Institute of Geochemistry (China) |
| GIG | Giga-Byte |
| GIG | Gwasanaeth Iechyd Gwladol (Welsh: National Health Service) |
| GIG | God Is Great |
| GIG | Get in Gear |
| GIG | Growing in Grace (various religious organizations) |
| GIG | Grand Invalide de Guerre (military disability information) |
| GIG | Gay International Group (Geneva, Switzerland) |
| GIG | Rio De Janeiro, Rio De Janeiro, Brazil - International Airport (Airport Code) |
| GIG | GoldenTalk Investment Group |
| GIG | Getting Involved Guide (various organizations) |
| GIG | Groupement des Ingénieurs en Géomatique (French: Geomatics Engineers Group; Switzerland) |
| GIG | GPS Integration Guide |
| GIG | General Industry Group (Australia) |
| GIG | Guild Inn Group |
| GIG | Ghosts in Gloom (gaming clan) |