CFR
- 23S rRNA (adenine2503-C2)-methyltransferase
- 23S rRNA (adenine2503-C2,C8)-dimethyltransferase
- CFFR
- CFR Cluj
- Caen – Carpiquet Airport
- Canadian Finals Rodeo
- Case fatality rate
- Centre for Foreign Relations
- Certified first responder
- Charter of Fundamental Rights
- Chess Federation of Russia
- China Fire and Rescue
- Chinese Buddhism
- Chinese folk religion
- Code of Federal Regulations
- Commander of the Order of the Federal Republic
- Compact fusion reactor
- Confucianism
- Coronary flow reserve
- Cost and Freight
- Council on Foreign Relations
- Căile Ferate Române
- European civil code
- Franciscan Friars of the Renewal
- Non-functional requirement
- Taoism