| Abbreviation | Definition |
|---|---|
| CGF | Crystal Growth Furnace |
| CGG | Contingency Gravity Gradient |
| CGP | Central Grounding Point |
| CGSS | Cryogenic Gas Storage Subsystem |
| CH4 | Methane |
| CHAMP | Comet Halley Active Monitoring Program |
| CHASE | Coronal Helium Abundance Spacelab Experiment |
| CHCS | Cabin Humidity Control Subsystem |
| CHeCS | Crew Health Care System |
| CHG | CHanGe |
| CHG | CHarGe |
| CHGR | CHarGeR |
| CHIPS | Cosmic Hot Interstellar Plasma Spectrometer |
| CHL | Certified Hardware List |
| CHL | CHanneL |
| CHMBR | CHaMBeR |
| CHR | Cooper-Harper Rating |
| CHRIS | Color High Resolution Imaging System |
| CHRIS | Compact High Resolution Imaging Spectrometer |
| CHROMEX | CHROMosome and Plant Cell Division in Space EXperiment |