Accident Investigation Branch

Accident Investigation Branch or Accidents Investigation Branch may refer to:

• Air Accidents Investigation Branch, a British government agency that investigates aviation accidents, formerly known as the Accidents Investigation Branch
• Marine Accident Investigation Branch, a British government agency that investigates marine accidents
• Rail Accident Investigation Branch, a British government agency that investigates railway accidents

See also

• Accident Investigation Board (disambiguation)
• Accident Investigation Bureau (disambiguation)