| Abbreviation | Definition |
|---|---|
| CG | Conflict Graph |
| CG | Conjugate Gradient |
| CGA | Constructive Genetic Algorithm |
| CGMO | China Girls Mathematical Olympiad |
| CGN | Conjugate Gradient Normal |
| CGNR | Conjugate Gradient Normal Residual |
| CGS | Centimeter, Gram, Second |
| CGS | Conjugate Gradient Squared |
| CHAID | CHi-squared Automatic Interaction Detector |
| CHAMP | Cougars and Houston Area Mathematics Program |
| CHAMP | The Credit Humber Association for Mathematics Promotion |
| CHR | Constraint Handling Rules |
| CHS | Convenient Horizontal Surface |
| CI | Cayley Isomorphism |
| CI | Classical Incremental |
| CI | Constant Interpolation |
| CI(s) | confidence interval(s) |
| CIA | Common Integrative Area |
| CIA | Confidence Interval Analysis |
| CICM | Conference on Intelligent Computer Mathematics |