| Abbreviation | Definition |
|---|---|
| CAWA | Climbers' Association of Western Australia |
| CBAA | Community Broadcasting Association of Australia |
| CBCA | Children's Book Council of Australia |
| CBIAC | Chartered Bank of India Australia and China |
| CCC | Crime and Corruption Commission |
| CCIWA | Chamber of Commerce and Industry of Western Australia |
| CCLA | Correspondence Chess League of Australia |
| CCNB | Community Care Northern Beaches (Australia) |
| CCSA | Community Connections Solutions Australia |
| CDAA | Career Development Association of Australia |
| CDAA | Cave Divers Association of Australia |
| CDNA | Communicable Disease Network Australia |
| CEA | Creative Enterprise Australia |
| CEAA | Circular Economy Alliance Australia |
| CEASA | Commercial Economic Advisory Service of Australia |
| CECA | Career Education Consultancy Australia |
| CEFG | Clean Energy Future Group |
| CERA | Centre for Eye Research Australia's |
| CESA | Centre for Elective Surgery at the Alfred |
| CEWA | Catholic Education Western Australia |