| Abbreviation | Definition |
|---|---|
| CRFI | Cancer Research Foundation India |
| CRGC | Cancer Registry of Greater California |
| CRMF | Cancer Relief Macmillan Fund |
| CRPC | Castration Resistant Prostate Cancer |
| CRT | Cancer Res Treat |
| CRT | Cancer Research and Treatment |
| CRT | Cancer Research Technology |
| CRTI | Cancer Research Translational Initiative |
| CRTP | Cancer Research Training Program |
| CRUK | Cancer Research UK |
| CSBS | Cancer Systems Biology Scholars |
| CSC | Cancer Support Community |
| CSCT | Cell Specific Cancer Therapy |
| CSN | Cancer Survivors Network |
| CSNF | Cancer Specialists of North Florida |
| CSR | Cancer Statistics Review |
| CSUG | Cancer Services User Group |
| CTC | Cancer Treatment Centre |
| CTCA | Cancer Treatment Centers of America |
| CTCI | Cell Therapy Cancer Immunotherapy |