| Acronym | Definition |
|---|
| AIG | Addressee Indicator Group (US DoD) |
| AIG | American International Group, Inc |
| AIG | Answers in Genesis (religious group in defense of Scripture) |
| AIG | Artificial Intelligence Group |
| AIG | Australian Industry Group |
| AIG | Asian Indoor Games (est. 2005) |
| AIG | Assistant Inspector General |
| AIG | Apprenticeship Incentive Grant (Canada) |
| AIG | Anthrax Immune Globulin (antitoxin) |
| AIG | Academically and Intellectually Gifted |
| AIG | Additional Inspector General (Nepal and Pakistan) |
| AIG | Alternative Investments Group |
| AIG | Advertising Information Group (Brussels, Belgium) |
| AIG | Aquilini Investment Group (Canada) |
| AIG | Address Indicator Group |
| AIG | Association Internationale de Géodésie (French: International Association of Geodesy) |
| AIG | Address Indicating Group |
| AIG | Air Intelligence Group |
| AIG | Arbeitsgemeinschaft für Informationsverarbeitung in Gynäkologie Und Geburtshilfe |
| AIG | Apollo Invest Group |
| AIG | Airbus Industries Group |
| AIG | Association Internationale de Gérontologie (International Association of Gerontology) |
| AIG | Address Information Group |
| AIG | Army Initiatives Group |
| AIG | Assistant Instructor in Gunnery (Canadian and British Military) |
| AIG | Advanced Instrumentation Group |
| AIG | Acquisition Improvement Group |
| AIG | Antitrust and Indemnity Group |
| AIG | Aging Interest Group (various universities) |
| AIG | Authentication Implementation Guide |
| AIG | Atomic Interactive Group, LLC (Dayton, OH) |
| AIG | Addressee Identification Group |
| AIG | Ain't I Great |
| AIG | Asociación de Industriales de Guatemala (Association of Industrialists of Guatemala 1929-34) |
| AIG | Architecture Integration Group |
| AIG | Amplifier Interface Group |
| AIG | Association Intercommunale du Gourma (French: Intercommunal Gourma Association) |