AAIB

AAIB may refer to:

Aircraft accident investigation organizations

Air Accident Investigation Bureau (Malaysia), an agency of the Ministry of Transport (Malaysia)
Air Accident Investigation Bureau (Mongolia), a branch of the government of Mongolia
Air Accident Investigation Bureau of Singapore, a statutory board of the Ministry of Transport in Singapore
Air Accidents Investigation Branch, a branch of the Department for Transport in the United Kingdom
Aircraft Accident Investigation Board (Iceland), a branch of the government of Iceland
Aircraft Accident Investigation Bureau (India), a branch of the government of India
Aircraft Accident Investigation Bureau (Switzerland), a former branch of the government of Switzerland