| Acronym | Meaning |
| CIS | Case Integration Services |
| CITIS | Contractor Integrated Technical Information Service |
| CIU | Cockpit Interface Unit |
| CJCS | Chairman Of The Joint Chief Of Staff |
| CJCS SROE | Chairman Of The Joint Chief Of Staff Standing Rules Of Engagement |
| CKPT | Cockpit |
| CL | Center Line |
| CL | Channel |
| CLAMS | Countermeasures Launcher Modular System |
| CLASS | Comprehensive Lsa Automated Support System |
| CLAW | Control Law Computations |
| CLIN | Contract Line Item Number |
| CLIP | Configuration Logistic Information Program |
| CLIPS | A Nasa Expert System Shell - C Language |
| CLR | Clear |
| CLS | Contractor Logistics Support |
| CLTE | Cost And Lead Time Estimate |
| CM | Configuration Management |
| CMAN | Configuration Management |
| CMDS | Cockpit Management Display System |
| CMI | Computer Managed Instruction |
| CMM | Capability Maturity Model |
| CMM | Core Memory Module |
| CMNT | Comment |
| CMO | Configuration Management Officer |
| CMOML | Consumables Maintenance And Overhaul Material List |
| CMOS | Complementary Metal Oxide Silicon |
| CMP | Configuration Management Plan |
| CMPTR | Computer |
| CMPTSC | Conventional Marine Propulsion Training Steering Group |
| CMR | Configuration Management Review |
| CMRS | Calibration/measurement Requirements Summary |
| CMS | Cockpit Management System |
| CMSS | Configuration Management Support System |
| CMVWP | Commander Medium Attack Tactical Warfare Wing Pacific |
| CNATRA | Chief Of Naval Air Training |
| CNAVRES | Chief Of Naval Reserve |
| CND | Chief Of Naval Development |
| CNET | Chief Of Naval Education And Training |
| CNEWTP | Consolidated Electronic Warfare |
| CNI | Comm/nav/iff |
| CNIU | Communication/navigation Interface Unit |
| CNM | Chief Of Naval Material |
| CNO | Chief Of Naval Operations |
| CNR | Chief Of Naval Research |
| CNTR | Control |
| CNTT | Chief Of Naval Technical Training (memphis) |
| CO | Change Order |
| COBOL | Common Business Oriented Language |
| COD | Carrier On-board Delivery |