| GIG | Gallery of Iconic Guitars 
| Others |
| GIG | Gaming Innovation Group
| Others |
| GIG | Gear Is Good
| Others |
| GIG | General Information Guide
| Others |
| GIG | Generalized Inverse Gaussian
| Others |
| GIG | Genetic Interest Group
| Others |
| GIG | Geoscience Information Group
| Others |
| GIG | Geospatial Information Group
| Others |
| GIG | Get In Gear
| Others |
| GIG | Get In Go
| Others |
| GIG | Get Into Goucher
| Others |
| GIG | Get It Going
| Others |
| GIG | Getting Inloved Globally
| Others |
| GIG | Girls In Geocaching
| Others |
| GIG | Global Incorporation Guide
| Others |
| GIG | Global Industrials Group
| Others |
| GIG | Global Information Grid
| Others |
| GIG | Global Innovation Gathering
| Others |
| GIG | Gluten Intolerance Group
| Others |
| GIG | Gluten Intolerant Group
| Others |
| GIG | God Investigation Group
| Others |
| GIG | God Is Good
| Others |
| GIG | God Is Great
| Others |
| GIG | Graphical Information Gyro
| Others |
| GIG | Great In General
| Others |
| GIG | Green Is Good
| Others |
| GIG | Grinnell In Grinnell
| Others |
| GIG | Group Individual Group
| Others |
| GIG | Group Investigating God
| Others |
| GIG | Groups Investigating God
| Others |
| GIG | Growing In God
| Others |
| GIG | Guys Invite Girls
| Others |
| GIG | Rio De Janeiro Internacional Airport, Rio De Janeiro, Brazil
| Others |