| civilian painter | 1 | |
| civilian personnel | 1 | |
| cleaner | 21 | |
| clerk | 7960 | |
| clinical assistant | 1 | |
| clinical pathologist | 1 | |
| clinical post-doctoral fellow | 4 | |
| clinical psychologist | 127 | |
| clinical research assistant | 1 | |
| clinical trial coordinator | 2 | |
| co-pilot | 31 | |
| coach | 7 | |
| cold chain officer | 1 | |
| commandant | 5 | |
| commercial apprentice | 1267 | |
| commercial assistant | 10 | |
| commercial tax officer | 26 | |
| commissioned officer | 1 | |
| community coordinator | 4 | |
| community meal expert | 1 | |
| community mental health worker | 140 | |
| community nurse | 61 | |
| company secretary | 116 | |
| compliance officer | 1 | |
| compounder | 4 | |