| Abbreviation | Definition |
|---|---|
| CQFP | Ceramic Quad Flat Pack |
| CQN | Closed-Queuing Network |
| CR | Comfortable Runabout |
| CR | Communications Range |
| CR | Cyclotron Resonance |
| CRADA | Cooperative Research And Development Agreement |
| C-RAN | Cloud Radio Access Network |
| CRB | Control of Response Bias |
| CRC | Cyclic Redundancy Check |
| CREM | Columbia River Electric Maintenance |
| CREME | Cosmic Ray Effects on Micro Electronics |
| CRES | Corrosion Resistant Engineered Solutions |
| CREST | Certificateless Registry for Electronic Share Transfer |
| CRF | Contrast Rendering Factor |
| CRF | Cumulative Relative Frequency |
| CRI | Cathode Ray Indicator |
| CRI | Color Reversal Internegative |
| CRO | Cathode Ray Oscilloscope |
| CRSQ | Calibration period of R-SQuared |
| CRT | Cathode Ray Tube |