| Acronym | Meaning |
| CPLT | Copilot |
| CPM | Critical Path Method |
| CPR | Contract Progress Review |
| CPR | Cost Performance Report |
| CPR/R | Component Pilot Rework/repair |
| CPS | Computer Process System |
| CPS | Contract Plant Services |
| CPT | Cockpit Procedure Trainer |
| CPT | Control Position Transducer |
| CPTP | Computer Program Test Procedures (plan) |
| CPTR | Computer Program Test Report |
| CPTS | Computer Program Test Specification |
| CPU | Central Processing Unit |
| CQI | Continuous Quality Improvement |
| CRC | Contractor Recommended Coding |
| CRDA | Cooperative Research & Development Agreement |
| CRE | Corrosion Resistant |
| CRES | Corrosion Resistant Steel |
| CRISD | Computer Resources Integrated Support Document |
| CRLCMP | Computer Resources Life Cycle Management Plan |
| CRN | Crown |
| CRO | Cognizant Regional Office |
| CRP | Cost Reduction Program |
| CRPL | Creeping Lines |
| CRR | Cognizant Regional Representative |
| CRSR | Cursor |
| CRT | Cathode Ray Tube |
| CRUS | Cruise |
| CS | Contractor Support |
| CS/FP | Contractor Support/full Provisioning |
| CSA | Configuration Status Accounting |
| CSAR | Combat Search And Rescue |
| CSC | Computer Sciences Corporation |
| CSC | Computer Software Component |
| CSCG | Communications Security Control Group |
| CSCI | Computer Software Configuration Item |
| CSDS | Control Speed Drive Starter |
| CSE | Common Support Equipment |
| CSEL | Consolidated Support Equipment List |
| CSI | Contractor Simulator Instruction (training) |
| CSJAG | Crew Station Joint Advisory Group |
| CSJWG | Crew Station Joint Working Group |
| CSMIS | Combat System Management Information System |
| CSMTSC | Combat System Manpower And Training Steering Committee |
| CSOG | Communications Security Operational Group |
| CSOM | Computer System Operator's Manual |
| CSPEI | Computer Software Product End Item |
| CSPP | Crew Scheduling And Phasing Plan |
| CSS | Central Security Service |
| CSS | Consolidated Support System |