| CR | Correlation Radiometer | In English | |
| CR | Card Reader | In English | |
| CR | Contractor's Response | In English | → 3474 |
| CR | Control Room | In English | |
| CR | Customer's Request | In English | |
| CR | Cathode Ray | In English | |
| CR | Certification Request | In English | |
| CR | Certification Requirement | In English | |
| CR | Change Record | In English | |
| CR | Change Request | In English | |
| CR | Configuration Review | In English | |
| CR | Classical Review | In English | → Serial publications, periodicals |
| CR | Congregation of the Rosarians | In English | → Roman catholic church |
| ČR | Český Rozhlas (www.rozhlas.cz) | In Czech | → Telecommunications |