| Acronym | Definition |
|---|
| CIGA | California Insurance Guarantee Association |
| CIGA | Cavity Insulation Guarantee Agency (Bedfordshire, UK) |
| CIGA | Certified Inspector General Auditor |
| CIGA | California Independent Grocers Association (Sacramento, CA) |
| CIGA | Connecticut Insurance Guaranty Association |
| CIGA | Congress for Intragalactic Accord (science fiction) |
| CIGA | Central Illinois Geocaching Association (Normal, Illinois) |
| CIGA | Comrades in Golden Arms (Jim Sinclair's Mineset website) |
| CIGA | Compagnia Italiana Dei Grandi Alberghi (Italian Company of Grand Hotels, Italy) |
| CIGA | Central Illinois Greyhound Adoption |
| CIGA | Companion of the International Guild of Artists (UK) |
| CIGA | Constrained Integrated Grooming Method |
| CIGA | Commercial and Inherently Governmental Activities (US Army) |
| CIGA | Choate International and Global Assistance (Choate Rosemary Hall; Wallingford, CT) |