CIAA

CIAA may refer to:


 * Cayman Islands Athletic Association, the governing body for the sport of athletics in the Cayman Islands
 * Central Intercollegiate Athletic Association, an NCAA Division II collegiate athletic conference
 * Confederation of the Food and Drink Industries of the EU, a European trade organization
 * Confederation of Indian Amateur Astronomer Association
 * Conference on Implementation and Application of Automata, an international academic conference in computer science
 * Cook Inlet Aquaculture Association, a non-profit organization promoting sustainable salmon fishing in Alaska
 * Office of the Coordinator of Inter-American Affairs, the U.S. government office led by the Coordinator of Inter-American Affairs
 * Comisión Investigadora de Accidentes de Aviación, Dominican Republic aviation accident investigation authority
 * Commission for the Investigation of Abuse of Authority, an apex constitutional body for corruption control for the Government of Nepal