| Acronym | Definition |
|---|
| CIGS | Copper Indium Gallium Selenide |
| CIGS | Ceilings (general aviation weather) |
| CIGS | Copper Indium Gallium Di-Selenide (compound semiconductor) |
| CIGS | Chief of the Imperial General Staff (WWII British) |
| CIGS | Centro de Instrução de Guerra na Selva (Brazilian Army Special Forces) |
| CIGS | Close-In Gun System (Naval weapon, aka Mark110) |
| CIGS | Contracts for the International Sale of Goods (United Nations Convention on) |
| CIGS | Centre International de Gérontologie Sociale (French: International Center for Social Gerontology) |
| CIGS | Community Integrated Grant System |