| CSIRO Industry PhD Program | research.csiro.au | 1 |
| CSIRO jobs | jobs.csiro.au | 2 |
| CSO Online | csoonline.com | 1 |
| Capital Brief | capitalbrief.com | 1 |
| CarExpert | carexpert.com.au | 3 |
| Carsales | carsales.com.au | 2 |
| Cdn | cdn.theconversation.com | 0 |
| Centre for Excellence in Child and Family Welfare | cfecfw.org.au | 1 |
| Cevo | cevo.com.au | 1 |
| Cloud Security Alliance | cloudsecurityalliance.au | 1 |
| Cobram Community House | cch.vic.edu.au | 1 |
| CoinSpot | coinspot.com.au | 2 |
| CoinSpot | www.coinspot.com.au | 1 |
| Coinstash | coinstash.com.au | 1 |
| Collins Booksellers | collinsbooks.com.au | 1 |
| CommercialRealEstate.com.au | commercialrealestate.com.au | 1 |
| Commonwealth Bank of Australia | commbank.com.au | 11 |
| Commonwealth Bank of Australia Newsroom | www.commbank.com.au | 1 |
| CompuServe.com | compuserve.com.au | 0 |
| Compuserve | compuserve.com | 1 |