CAAT

CAAT may refer to:
 * Civil Aviation Authority of Thailand, an independent agency of the Thai government.
 * Computer Assisted Auditing Techniques Techniques and computer programs that are developed to audit electronic data
 * Centro de Apoyo Académico y Tutorías Academic Student Support Services & Tutoring Center
 * Center for Alternatives to Animal Testing, a US research center
 * Campaign Against Arms Trade, a British campaigning organisation
 * The CAAT box in molecular genetics
 * The Children's Air Ambulance Trust, a fundraising organisation for the Children's Air Ambulance
 * Cornwall Air Ambulance Trust, a charity that maintains and runs the Cornwall air ambulance
 * Combined Anti-Armor Team - Highly mobile Anti-Armor teams used by the United States Marine Corps
 * Captive Air Amphibious Transporter, a DARPA tracked amphibious vehicle carrying containers from ship to shore
 * A Community Awareness Action Team based in Westminster, Colorado
 * Colleges of Applied Arts and Technology in the Canadian province of Ontario