CSR
- C Sports Racer
- C-S-R Triangle theory
- C. S. R. Anjaneyulu
- CSR (Australian company)
- CSR (group)
- CSR 97.4FM
- CSR Corporation Limited
- CSR Group
- CSR Racing
- CSR plc
- Cab Secure Radio
- Canning Stock Route
- Cedarlands Scout Reservation
- Center for Scientific Review
- Center for Strategic Research (Iran)
- Central serous retinopathy
- Centre for Software Reliability
- Certificate signing request
- Chemical shift reagent
- Cherokee Scout Reservation
- Cheyne–Stokes respiration
- Child sex ratio
- Chinese Soviet Republic
- Class switch recombination
- Clinical study report
- Cognitive science of religion
- Combat stress reaction
- Comités syndicalistes révolutionnaires
- Common Sense Revolution
- Community service register
- Competition Success Review
- Complete spatial randomness
- Comprehensive School Reform
- Control/Status Register
- Corporate social responsibility
- Cost sharing reductions subsidy
- Cultic Studies Review
- Customer service representative
- Cutch State Railway
- Czechoslovak Republic
- Czechoslovak Socialist Republic
- Spending Review
- Team 18