| Acronym | Meaning |
| CEIAC | Coastal Engineering Information Analysis Center |
| CEIT | Crew Equipment Integration Test |
| CEIT | Crew Equipment Interface Test |
| CEIT | Crew Equipment Interface Test |
| CEQ | Council On Environmental Quality |
| CER | Cost Estimating Relationship |
| CERT | Certification |
| CES | Control Electronics System |
| CES | Crew Escape System |
| CF | Carrier Frequency |
| CF | Center Forward |
| CF | Centrifugal Force |
| CFD | Converter |
| CFE | Contractor Furnished Equipment |
| CFES | Continuous Flow Electrophoresis System |
| CFI | Card Format Identifier |
| CFM | Cubic Feet Per Minute |
| CFM | Customer Furnished Material |
| CFMF | Crip Flow Management Facility |
| CFP | Conceptual Flight Profile |
| CFR | Code Federal Regulation |
| CFRP | Carbon Fiber Reinfr- |
| CFSTI | Clearinghouse For Scientific And Technical Informatio |
| CFT | Common Facilities Test |
| CFY | Company Fiscal Year |
| CG | Center Of Gravity |
| CGAU | Cabin Gas Analysis Unit |
| CGC | Command Guidance Computer |
| CGP | Central Grounding Point |
| CGSS | Cryogenic Gas Storage Subsystem |
| CH | Channel |
| CH | 4Methane |
| CHAN | Channel |
| CHAR | Character |
| CHCS | Cabin Humidity Control Subsystem |
| CHG | Change |
| CHG | Charge |
| CHGR | Charger |
| CHL | Certified Hardware List |
| CHL | Channel |
| CHMBR | Chamber |
| CHR | Cooper-Harper Rating |
| CHUTE | Parachute |
| CHX | Cabin Heat Exchanger |
| CI | Certification Inspection |
| CI | Color Interior Film |
| CI | Configuration Inspection |
| CI | Configuration Item |
| CI | Continuous Interlock |
| CI | Course (deviation Display) Invalid |