IGU
| Acronym | Definition |
|---|---|
| IGU | International Geographical Union |
| IGU | International Gas Union |
| IGU | Insulated Glass Units (windows) |
| IGU | I Got U |
| IGU | Income Generating Unit (various organizations) |
| IGU | Iguassu Falls, Parana, Brazil (Airport Code) |
| IGU | Internationale Gruppe für Umweltstudien (Zurich, Switzerland) |
| IGU | Indian Geophysical Union |
| IGU | International Goodwill and Understanding (Soroptomist International) |
| IGU | I Give Up |