| CIAA | Canadian Independent Adjusters' Association 
| Others |
| CIAA | Canadian Independent Automotive Association
| Others |
| CIAA | Cayman Islands Airports Authority
| Others |
| CIAA | Cayman Islands Athletic Association
| Others |
| CIAA | Central Intercollegiate Athletic Association
| Others |
| CIAA | Central Intercollegiate Athletics Association
| Others |
| CIAA | Central Intermediate Athletic Association
| Others |
| CIAA | Central Iowa Apartment Alliance
| Others |
| CIAA | Chiysonovelty Intellectuals Advancement Alliance
| Others |
| CIAA | Christ is Absolutely Amazing
| Others |
| CIAA | Circle of Inner Asian Art
| Others |
| CIAA | Clean Indoor Air Act
| Others |
| CIAA | Commission for the Investigation of Abuse of Authority
| Others |
| CIAA | Commission on Investigation of the Abuse of Authority
| Others |
| CIAA | Conanicut Island Art Association
| Others |
| CIAA | Confederation of Indian Amateur Astronomer
| Others |
| CIAA | Conference on Implementation and Application of Automata
| Others |
| CIAA | Confidentiality Integrity Availability and Accountability
| Others |
| CIAA | Continental Insurance Agency Alliance
| Others |
| CIAA | Cook Inlet Aquaculture Association
| Others |
| CIAA | Coordinator of Inter American Affairs
| Others |
| CIAA | Coordinator of Inter-American Affairs
| Others |
| CIAA | Council of Ijaw Associations Abroad
| Others |
| CIAA | Covington Integrated Arts Academy
| Others |
| CIAA | Cuffin In Another Area
| Others |