AIG is American International Group, an American multinational finance and insurance corporation; the firm's stock symbol on the New York Stock Exchange is also "AIG".
AIG or AiG may also refer to:
- AIGs, abbreviation for Asian Indoor Games, one predecessor of the Asian Indoor and Martial Arts Games, a pancontinental multi-sport event.
- AiG, aka Answers in Genesis, a nonprofit promoting Young Earth creationism
- AIG/Lincoln, original name when established of White Star Real Estate, an international real estate company based in the United States
- A.I.G. or Allah Is God, a pop duo
- AIG Financial Products, subsidiary of American Insurer AIG
- AIG Tower, former name of AIA Central, a skyscraper in Hong Kong
- AIG Travel Guard, a North American Travel insurance provider
- And-inverter graph, a concept in computer theory—via abbreviation AIG
- Aigburth railway station in Liverpool, England—via the National Rail Code aka Station Code AIG